Wang, Jingquan et al. published their research in Water Research in 2022 | CAS: 620-92-8

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. Converting an alcohol to an alkene requires removal of the hydroxyl group and a hydrogen atom on the neighbouring carbon atom. Dehydrations are most commonly carried out by warming the alcohol in the presence of a strong dehydrating acid, such as concentrated sulfuric acid.Synthetic Route of C13H12O2

Generality and diversity on the kinetics, toxicity and DFT studies of sulfate radical-induced transformation of BPA and its analogues was written by Wang, Jingquan;Zheng, Min;Deng, Yang;Liu, Min;Chen, Ying;Gao, Naiyun;Du, Erdeng;Chu, Wenhai;Guo, Hongguang. And the article was included in Water Research in 2022.Synthetic Route of C13H12O2 The following contents are mentioned in the article:

The international campaign to ban bisphenol A (BPA) has resulted in increasing application of BPA substitutes. However, investigations have mainly been confined to the removal of single contaminant from the water, resulting in an inefficient burden. Furthermore, systematic study and synthetical discussion of bisphenol analogs (BPs) kinetics and transformation pathways were largely underemphasized. Chem. oxidation of BPA and four typical alternatives (i.e., bisphenol AF, bisphenol E, bisphenol F and bisphenol S) in a UV-activated persulfate system was examined in this study. The effects of persulfate (PS) dosage, pH and water matrix constituents (i.e., bicarbonate, chloride and natural organic matter) were comprehensively examined using a combination of laboratory experiments and math. modeling. According to our findings, the removal characteristics of different BPs employing SO4·--induced removal technol., including degradation mechanisms and influencing trends by water matrix, revealed similarly. The second order-rate constants of SO4·- reacting with BPs served as the main variables mediating the variation in degradation kinetics. Frontier MO theory and d. functional theory suggested BPs mols. possessed the same susceptible positions to free radicals. In the UV-activated PS process, transformation pathways included hydroxylation, electron-transfer, substitution, and rearrangement triggered by ortho-cleavage, with certain intermediates exhibiting higher toxicity than the parent chems. The findings of this study provided valuable information to estimate potential environmental risks of using BPA alternatives. This study involved multiple reactions and reactants, such as 4,4′-Methylenediphenol (cas: 620-92-8Synthetic Route of C13H12O2).

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. Converting an alcohol to an alkene requires removal of the hydroxyl group and a hydrogen atom on the neighbouring carbon atom. Dehydrations are most commonly carried out by warming the alcohol in the presence of a strong dehydrating acid, such as concentrated sulfuric acid.Synthetic Route of C13H12O2

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Jiang, Xiuming et al. published their research in Industrial Crops and Products in 2022 | CAS: 620-92-8

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. A strong base can deprotonate an alcohol to yield an alkoxide ion (R―O−). For example, sodamide (NaNH2), a very strong base, abstracts the hydrogen atom of an alcohol. Converting an alcohol to an alkene requires removal of the hydroxyl group and a hydrogen atom on the neighbouring carbon atom. Dehydrations are most commonly carried out by warming the alcohol in the presence of a strong dehydrating acid, such as concentrated sulfuric acid.Quality Control of 4,4′-Methylenediphenol

Liquefied wheat straw as phenols for bio-based phenolic resins: Reaction parameters optimization and chemical routes was written by Jiang, Xiuming;Li, Peilong;Ding, Zhan;Li, Huifeng;Bing, Hui;Zhang, Linqing. And the article was included in Industrial Crops and Products in 2022.Quality Control of 4,4′-Methylenediphenol The following contents are mentioned in the article:

The value-added conversion of biomass materials is accepted as a promising approach to alleviate the energy crisis and promote green chem. This work aims to investigate the conversion process and chem. routes from liquefied wheat straw (LWS) to bio-based phenolic resins (BPFRs) and their potential opportunity as an alternative to petroleum-based asphalt binders. Response surface methodol. (RSM) was introduced for the optimization of synthesis conditions, while the Fourier transform IR (FTIR), NMR (NMR) and SEM were used to explore the chem. reactions during the conversion process and the morphol. characteristics of resins. The feasibility of BPFRs application in asphalt binders was investigated based on rheol. tests. The results demonstrate that the LWS is rich in phenolic compounds with reactive sites in para or ortho positions, which can replace petroleum-based phenol in the reaction with formaldehyde. Further, the produced intermediates, methylolphenols and bisphenol F, are subject to the condensation reaction to form BPFR mols. with about five phenolic nuclei. The connection between phenolic nuclei is dominated by para-methylene bridges (about 70%). The synthesis is suggested to be carried out at a molar ratio of phenol-to-formaldehyde of 0.75 without addnl. sulfuric acid, and the preferred polymerization temperature and time are 95°C and 120 min. It should be noted that the reactivity of LWS is lower than that of petroleum-based phenol and may be accompanied by self-curing effects. Noticeable folds are observed on the surface of BPFRs. Encouragingly, acceptable compatibility and rutting resistance in the BPFR-asphalt system are identified. This study involved multiple reactions and reactants, such as 4,4′-Methylenediphenol (cas: 620-92-8Quality Control of 4,4′-Methylenediphenol).

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. A strong base can deprotonate an alcohol to yield an alkoxide ion (R―O−). For example, sodamide (NaNH2), a very strong base, abstracts the hydrogen atom of an alcohol. Converting an alcohol to an alkene requires removal of the hydroxyl group and a hydrogen atom on the neighbouring carbon atom. Dehydrations are most commonly carried out by warming the alcohol in the presence of a strong dehydrating acid, such as concentrated sulfuric acid.Quality Control of 4,4′-Methylenediphenol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Caballero-Casero, Noelia et al. published their research in Analytical and Bioanalytical Chemistry in 2022 | CAS: 620-92-8

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. Under appropriate conditions, inorganic acids also react with alcohols to form esters. To form these esters, a wide variety of specialized reagents and conditions can be used. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage. No further oxidation is seen except under very stringent conditions.Application of 620-92-8

Identification of bisphenols and derivatives in greenhouse dust as a potential source for human occupational exposure was written by Caballero-Casero, Noelia;Rubio, Soledad. And the article was included in Analytical and Bioanalytical Chemistry in 2022.Application of 620-92-8 The following contents are mentioned in the article:

Abstract: Bisphenol A (BPA) and alternative bisphenols are widely used in the industrial production of polycarbonates and resin polymers. Adverse effects on human health have been described for BPA and owing to the structural similarity of alternative bisphenols and derivatives, a similar toxicity profile is expectable. Dust can act as a sink for bisphenols owing to the large surface area to mass ratio. Human risk exposure to bisphenols via indoor dust has been widely assessed in the last decade. The environmental conditions inside greenhouses, among other factors, facilitate that chems. are released from greenhouse building materials to dust. This study aims to explore for the first time the potential of greenhouse dust as a new source of bisphenols for human exposure. For this purpose, a supramol. solvent-based method was applied to the extraction of twenty-one bisphenols from greenhouse dust, prior to their determination by liquid chromatog.-tandem mass spectrometry. Nineteen bisphenols were found in the five greenhouse dust samples analyzed, with concentrations ranging from 5275 ng g-1 (BPA) to 0.25 ng g-1 (trichlorobisphenol A). The average daily dose (ADD) via dust ingestion for bisphenol compounds was calculated, in order to estimate the occupational exposure for inadvertent dust ingestion. Despite the calculated ADD value for BPA (47.81 ng kg-1 day-1) being below the tolerable daily intake proposed by EFSA (4·103 ng kg-1 day-1), this value was considerably higher than those previously reported for indoor dust, which brings to light the importance of considering greenhouse dust as bisphenols source of exposure for greenhouse workers. This study involved multiple reactions and reactants, such as 4,4′-Methylenediphenol (cas: 620-92-8Application of 620-92-8).

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. Under appropriate conditions, inorganic acids also react with alcohols to form esters. To form these esters, a wide variety of specialized reagents and conditions can be used. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage. No further oxidation is seen except under very stringent conditions.Application of 620-92-8

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wang, Ruihua et al. published their research in Environmental Sciences Europe in 2022 | CAS: 620-92-8

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. A strong base can deprotonate an alcohol to yield an alkoxide ion (R―O−). For example, sodamide (NaNH2), a very strong base, abstracts the hydrogen atom of an alcohol. Tertiary alcohols cannot be oxidized at all without breaking carbon-carbon bonds, whereas primary alcohols can be oxidized to aldehydes or further oxidized to carboxylic acids.Safety of 4,4′-Methylenediphenol

The bisphenol F and bisphenol S and cardiovascular disease: results from NHANES 2013-2016 was written by Wang, Ruihua;Fei, Qiaoyuan;Liu, Shan;Weng, Xueqiong;Liang, Huanzhu;Wu, Yingying;Wen, Lin;Hao, Guang;Cao, Guangwen;Jing, Chunxia. And the article was included in Environmental Sciences Europe in 2022.Safety of 4,4′-Methylenediphenol The following contents are mentioned in the article:

Bisphenol F (BPF) and bisphenol S (BPS) have replaced bisphenol A (BPA) in the manufacturing of products containing polycarbonates and epoxy resins; however, the effects of these substitutes on the risk of cardiovascular disease (CVD), including congestive heart failure, coronary heart disease, angina pectoris, heart attack, and stroke, have not been assessed. To examine the association of urinary BPS and BPF with CVD risk in a U.S. representative U.S. population. Cross-sectional data from 1267 participants aged 20-80 years from the 2013-2016 National Health and Nutrition Examination Survey (NHANES) were analyzed. Survey-weighted multiple logistic regression was used to assess the association between BPA, BPF, BPS and CVD. The Bayesian kernel machine regression (BKMR) model was applied to assess the mixture effect. A total of 138 patients with CVD were identified. After adjusting for potential confounding factors, the T3 tertile concentration of BPS increased the risk of total CVD (OR: 1.99, 95% CI 1.16-3.40). When stratified by age, we found that BPS increased the risk of CVD in the 50-80 age group (OR: 1.40, 95% CI 1.05-1.87). BPS was pos. associated with the risk of coronary heart disease, and the T3 tertile concentration of BPS increased the coronary heart disease risk by 2.22 times (95% CI 1.04-4.74). No significant association was observed between BPF and CVD. Although the BKMR model did not identify the mixed exposure effect of BPS, the risk of CVD increased with increasing compound concentration Our results suggest that BPS may increase the risk of total CVD and coronary heart disease in the US population, and prospective studies are needed to confirm the results. This study involved multiple reactions and reactants, such as 4,4′-Methylenediphenol (cas: 620-92-8Safety of 4,4′-Methylenediphenol).

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. A strong base can deprotonate an alcohol to yield an alkoxide ion (R―O−). For example, sodamide (NaNH2), a very strong base, abstracts the hydrogen atom of an alcohol. Tertiary alcohols cannot be oxidized at all without breaking carbon-carbon bonds, whereas primary alcohols can be oxidized to aldehydes or further oxidized to carboxylic acids.Safety of 4,4′-Methylenediphenol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yu, Jianan et al. published their research in Chemical Engineering Journal (Amsterdam, Netherlands) in 2022 | CAS: 620-92-8

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. The most common reactions of alcohols can be classified as oxidation, dehydration, substitution, esterification, and reactions of alkoxides.COA of Formula: C13H12O2

Fe-nitrogen-doped carbon with dual active sites for efficient degradation of aromatic pollutants via peroxymonosulfate activation was written by Yu, Jianan;Zhu, Zhiliang;Zhang, Hua;Qiu, Yanling;Yin, Daqiang. And the article was included in Chemical Engineering Journal (Amsterdam, Netherlands) in 2022.COA of Formula: C13H12O2 The following contents are mentioned in the article:

Fenton-like catalysis has received much attention as the promising technol. for organic pollutant degradation, whereas it suffers from low at. utilization, poor catalysts durability and difficult after-treatment to hamper the catalytic oxidation activity. Herein, a Fe- and nitrogen-codoped carbon (Fe-N-C) originated from nanocellulose-based hydrochar, nitrogen source, and iron salt precursor was developed for improved PMS activation and identification of exclusive role of each species. The catalyst formed with interconnected bamboo-shaped 3D tubular structures and high Fe-doping level (up to ∼9.0 wt%) not only realized excellent efficiencies in oxidative degradation of various aromatic pollutants, but was also endowed with high durability and stability toward PMS activation. Compared with that of the control catalysts only comprising either C-N network or supported Fe nanoparticles (Fe-C) with FeIV-oxo complex sites, the co-existent active sites of Fe-N configuration and at. Fe cluster in Fe-N-C could simultaneously improve the graphitization degree, and act as a “support” for constructing the stable structure. It is likely that the coordinated Fe-N formed with annealing process is devoted to decompose PMS by radical generation for pollutants degradation via a radical oxidation process; while the enhanced C-N bonded with graphitic N contribute to produce 1O2 through the nonradical processes interacted with PMS. This Fe-N-C/PMS-coupled process provided a designed strategy to construct the highly active and stable metal-nitrogen-codoped hydrothermal carbons, and deepened insights on structure-activity-stability relationship for persulfate-based environmental remediation. This study involved multiple reactions and reactants, such as 4,4′-Methylenediphenol (cas: 620-92-8COA of Formula: C13H12O2).

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. The most common reactions of alcohols can be classified as oxidation, dehydration, substitution, esterification, and reactions of alkoxides.COA of Formula: C13H12O2

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Grobin, Andrej et al. published their research in Chemosphere in 2022 | CAS: 620-92-8

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. Alcohols are weak acids. The most acidic simple alcohols (methanol and ethanol) are about as acidic as water, and most other alcohols are somewhat less acidic. Alcohols may be oxidized to give ketones, aldehydes, and carboxylic acids. These functional groups are useful for further reactions. Oxidation of organic compounds generally increases the number of bonds from carbon to oxygen (or another electronegative element, such as a halogen), and it may decrease the number of bonds to hydrogen.Application of 620-92-8

Multi-parameter risk assessment of forty-one selected substances with endocrine disruptive properties in surface waters worldwide was written by Grobin, Andrej;Roskar, Robert;Trontelj, Jurij. And the article was included in Chemosphere in 2022.Application of 620-92-8 The following contents are mentioned in the article:

A review. The increasing use of substances with endocrine disruptive properties (EDs) not only impacts aquatic organisms but can also have a direct neg. effect on human health. In this comprehensive worldwide review, we collected ecotoxicol. and concentration data observed in surface water for 53 high-potency EDs and performed a risk assessment. The compounds were selected from the EU watchlist of priority substances, expanded with new compounds of emerging concern (total 41), where quantifiable data were available for the past three years (2018-2020). The risk quotients ranged from <0.01 for 22 substances to 1974 for tamoxifen. The frequency of samples in which the predicted no-effect concentrations were exceeded also varied, from 1.8% to 92.7%. By using the comprehensive multi-parameter risk assessment in our study, the most current to date, we determined that tamoxifen, imidacloprid, clothianidin, four bisphenols (BPA, BPF, BPS, and BPAF), PFOA, amoxicillin, and three steroid hormones (estriol, estrone, and cyproterone) pose significant risks in the environment. Comparing two structurally very similar bisphenols, BPA and BPB, suggested that the risk from BPB is currently underestimated by at least four orders of magnitude due to the lack of ecotoxicol. data availability. The methodol. limitations encountered suggest that a standardized methodol. for data selection and assessment is necessary, highlighting the fact that some substances are currently under-represented in the field of ecotoxicol. research. A new prioritization system is therefore presented, which provides a potential basis for new substances to be included in environmental monitoring lists. This study involved multiple reactions and reactants, such as 4,4′-Methylenediphenol (cas: 620-92-8Application of 620-92-8).

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. Alcohols are weak acids. The most acidic simple alcohols (methanol and ethanol) are about as acidic as water, and most other alcohols are somewhat less acidic. Alcohols may be oxidized to give ketones, aldehydes, and carboxylic acids. These functional groups are useful for further reactions. Oxidation of organic compounds generally increases the number of bonds from carbon to oxygen (or another electronegative element, such as a halogen), and it may decrease the number of bonds to hydrogen.Application of 620-92-8

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Xie, Jiahui et al. published their research in Chemosphere in 2022 | CAS: 620-92-8

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. Grignard and organolithium reagents are powerful tools for organic synthesis, and the most common products of their reactions are alcohols.HPLC of Formula: 620-92-8

Occurrence and partitioning of bisphenol analogues, triclocarban, and triclosan in seawater and sediment from East China Sea was written by Xie, Jiahui;Zhao, Nan;Zhang, Yingying;Hu, Hongmei;Zhao, Meirong;Jin, Hangbiao. And the article was included in Chemosphere in 2022.HPLC of Formula: 620-92-8 The following contents are mentioned in the article:

Bisphenol analogs (BPs), triclocarban (TCC), and triclosan (TCS) are well-known environmental endocrine disrupters. Many studies have characterized their occurrence in the freshwater environment. However, their environmental behaviors in the coastal marine environment remain poorly understood. Here, matched seawater and sediment samples were collected from East China Sea, and analyzed for 13 BPs (including halogenated derivatives of bisphenol A), TCC, and TCS. Bisphenol A (BPA; mean 23 ng/L) was the predominant BP in seawaters, followed by tetrabromobisphenol A (TBBPA; 2.3 ng/L) and bisphenol S (BPS; 2.2 ng/L). Seawater concentrations of TCS (<LOD-8.7 ng/L) were much higher (p < 0.01) than that of TCC (<LOD-0.33 ng/L). In sediments BPA was still the major BP (mean 13 ng/g dw, dry weight), followed by bisphenol F (1.6 ng/g dw) and BPS (0.69 ng/g dw). All sediment samples contained measurable TCC (0.12-6.6 ng/g dw), while TCS was occasionally detected. For the first time, this study reports the environmental occurrence of bisphenol M and 4,4′-sulfonylbis (2-aminophenol) (a first discovered BPS analog) in seawaters and sediments. Spatially, inshore seawater and sediment samples contained higher (p < 0.01) BPA and BPS concentrations, compared with offshore samples. The mean log-transformed sediment-seawater partitioning coefficients (log Koc) ranged from 2.3 (TBBPA) to 4.0 (TCC). The log Koc values of BPA, BPS, and BPAF were lower than those previously reported in the freshwater environment. Overall, this study provides first data on the spatial distribution patterns and partitioning behaviors of BPs, TCC, and TCS in marine environment. This study involved multiple reactions and reactants, such as 4,4′-Methylenediphenol (cas: 620-92-8HPLC of Formula: 620-92-8).

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. Grignard and organolithium reagents are powerful tools for organic synthesis, and the most common products of their reactions are alcohols.HPLC of Formula: 620-92-8

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Mu, Xiyan et al. published their research in Environmental Science & Technology in 2022 | CAS: 620-92-8

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. A strong base can deprotonate an alcohol to yield an alkoxide ion (R―O−). For example, sodamide (NaNH2), a very strong base, abstracts the hydrogen atom of an alcohol. Under carefully controlled conditions, simple alcohols can undergo intermolecular dehydration to give ethers. This reaction is effective only with methanol, ethanol, and other simple primary alcohols.Quality Control of 4,4′-Methylenediphenol

Bisphenol F Impaired Zebrafish Cognitive Ability through Inducing Neural Cell Heterogeneous Responses was written by Mu, Xiyan;Liu, Jia;Wang, Hui;Yuan, Lilai;Wang, Chengju;Li, Yingren;Qiu, Jing. And the article was included in Environmental Science & Technology in 2022.Quality Control of 4,4′-Methylenediphenol The following contents are mentioned in the article:

The central nervous system (CNS) is a sensitive target for endocrine-disrupting chems., such as bisphenol analogs. Bisphenol A (BPA) usage is associated with the occurrence of many neurol. diseases. With the restricted use of BPA, bisphenol F (BPF) has been greatly introduced for industrial manufacture and brings new hazards to public CNS health. To understand how BPF affects the neural system, we performed a cognitive test for zebrafish that are continuously exposed to environmentally relevant concentrations (0.5 and 5.0μg/L) of BPF since embryonic stage and identified suppressed cognitive ability in adulthood. Single-cell RNA sequencing of neural cells revealed a cell composition shift in zebrafish brain post BPF exposure, including increase in microglia and decrease in neurons; these changes were further validated by immune staining. At the same time, a significant inflammatory response and increased phagocytic activity were detected in zebrafish brain post BPF exposure, which were consistent with the activation of microglia. Cell-specific transcriptomic profiles showed that abnormal phagocytosis, activated brain cell death, and apoptosis occurred in microglia post BPF exposure, which are responsible for the neuron loss. In addition, certain neurol. diseases were affected by BPF in both excitatory and inhibitory neurons, such as the movement disorder and neural muscular disease, however, with distinctly involved genes. These findings indicate that BPF exposure could lead to an abnormal cognitive behavior of zebrafish through inducing heterogeneous changes of neural cells in brain and revealed the dominating role of microglia in mediating this effect. This study involved multiple reactions and reactants, such as 4,4′-Methylenediphenol (cas: 620-92-8Quality Control of 4,4′-Methylenediphenol).

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. A strong base can deprotonate an alcohol to yield an alkoxide ion (R―O−). For example, sodamide (NaNH2), a very strong base, abstracts the hydrogen atom of an alcohol. Under carefully controlled conditions, simple alcohols can undergo intermolecular dehydration to give ethers. This reaction is effective only with methanol, ethanol, and other simple primary alcohols.Quality Control of 4,4′-Methylenediphenol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Xiao, Zhiming et al. published their research in Environmental Pollution (Oxford, United Kingdom) in 2022 | CAS: 620-92-8

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. Under appropriate conditions, inorganic acids also react with alcohols to form esters. To form these esters, a wide variety of specialized reagents and conditions can be used. Tertiary alcohols cannot be oxidized at all without breaking carbon-carbon bonds, whereas primary alcohols can be oxidized to aldehydes or further oxidized to carboxylic acids.Formula: C13H12O2

Enzymatic probe sonication for quick extraction of total bisphenols from animal-derived foods: Applicability to occurrence and exposure assessment was written by Xiao, Zhiming;Wang, Shi;Suo, Decheng;Wang, Ruiguo;Huang, Yuan;Su, Xiaoou. And the article was included in Environmental Pollution (Oxford, United Kingdom) in 2022.Formula: C13H12O2 The following contents are mentioned in the article:

A high demand exists in bisphenols (BPs) screening studies for quick, reliable and straightforward anal. methods that generate data faster and simultaneously. Herein, we describe a combination of enzymic probe sonication (EPS) and ultra-performance liquid chromatog.-tandem mass spectrometry (UPLC-MS/MS) for quick extraction and simultaneous quantification of eight important BPs in animal-derived foods. Results obtained demonstrated that the ultrasonic probe power could not only enhance the enzymic hydrolysis efficiency, but also accelerate the liquid-liquid extraction procedure. Under optimized EPS parameters, one sample could be exhaustively extracted within 120 s, as compared with 12 h needed for the conventional enzymic extraction which is more suitable for high-throughput anal. The method was successfully applied to analyze residual BPs in animal-derived foods collected from Beijing, China. Widespread occurrence of BPA, BPS, BPF, BPAF, BPP, and BPB were found, with detection frequencies of 65.2%, 42.4%, 33.7%, 29.4%, 28.3%, and 27.2%, resp. The highest total concentration levels of BPs (sum of the eight BPs analyzed, ΣBPs) were found in chicken liver (mean 12.2 μg/kg), followed by swine liver (6.37 μg/kg), bovine muscle (3.24 μg/kg), egg (2.03 μg/kg), sheep muscle (2.03 μg/kg), chicken muscle (1.45 μg/kg), swine muscle (1.42 μg/kg), and milk (1.17 μg/kg). The estimated daily intake (EDI) of BPs, based on the mean and 95th percentile concentrations and daily food consumptions, was estimated to be 5.687 ng/kg bw/d and 22.71 ng/kg bw/d, resp. The human health risk assessment in this work suggests that currently BPs do not pose significant risks to the consumers because the hazard index (HI) was <1. This study involved multiple reactions and reactants, such as 4,4′-Methylenediphenol (cas: 620-92-8Formula: C13H12O2).

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. Under appropriate conditions, inorganic acids also react with alcohols to form esters. To form these esters, a wide variety of specialized reagents and conditions can be used. Tertiary alcohols cannot be oxidized at all without breaking carbon-carbon bonds, whereas primary alcohols can be oxidized to aldehydes or further oxidized to carboxylic acids.Formula: C13H12O2

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yuan, Wenjing et al. published their research in Chemical Engineering Journal (Amsterdam, Netherlands) in 2022 | CAS: 620-92-8

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. Alcohols are among the most common organic compounds. They are used as sweeteners and in making perfumes, are valuable intermediates in the synthesis of other compounds, and are among the most abundantly produced organic chemicals in industry. The most common reactions of alcohols can be classified as oxidation, dehydration, substitution, esterification, and reactions of alkoxides.SDS of cas: 620-92-8

Synergistic dual-functionalities of starch-grafted-styrene hydrophilic porous resin for efficiently removing bisphenols from wastewater was written by Yuan, Wenjing;Zhou, Liqin;Zhang, Zhaoqiang;Ying, Yunpan;Fan, Weidong;Chai, Kungang;Zhao, Ziqi;Tan, Zhongwei;Shen, Fang;Ji, Hongbing. And the article was included in Chemical Engineering Journal (Amsterdam, Netherlands) in 2022.SDS of cas: 620-92-8 The following contents are mentioned in the article:

Highly efficient remediation of bisphenols (BPs) contaminated wastewater by adsorption is intriguing but remains challenging. Herein, we present a starch-grafted-styrene hydrophilic porous resin (SGS-HPR) showing excellent BPs adsorption capacity, through simple graft copolymerization and then external knitting strategy. The typical influencing factors of graft copolymerization and external crosslinking processes were investigated systematically. A series of characterization experiments verified the successful fabrication of SGS-HPR and manifested that the optimum product, SGS-HPR7, possesses a hierarchical porous structure with strong hydrophilicity. The abundant presence of starch chain in SGS-HPR7, not only increased the hydrophilicity but also enhanced the adsorption affinity, making SGS-HPR7 exhibit remarkable removal ability toward BPs. The adsorption performance of SGS-HPR7 was studied systematically in static mode. The results showed that SGS-HPR7 can adsorb BPs quickly with a stable ability irresp. of the varying aqueous environments. Besides, the continuous adsorption and regeneration experiments were conducted using bisphenol A (BPA) as the model BPs. The adsorbed BPA can be efficiently desorbed by ethanol elution, and the regenerated SGS-HPR7 showed great recyclability. Interestingly, SGS-HPR7 also retained the superior adsorption capacity and marvelous regeneration ability in the continuous adsorption experiments Further, according to theor. calculation studies, the hydrogen-bonding and π-π stacking interactions involved mechanism was uncovered clearly. Collectively, this work provides a new convenient strategy to fabricate new highly hydrophilic bio-based adsorbent for BPs removal. This study involved multiple reactions and reactants, such as 4,4′-Methylenediphenol (cas: 620-92-8SDS of cas: 620-92-8).

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. Alcohols are among the most common organic compounds. They are used as sweeteners and in making perfumes, are valuable intermediates in the synthesis of other compounds, and are among the most abundantly produced organic chemicals in industry. The most common reactions of alcohols can be classified as oxidation, dehydration, substitution, esterification, and reactions of alkoxides.SDS of cas: 620-92-8

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts