Category: 591-70-8

《The adsorption of polar cyclic compounds on iron surfaces from hydrocarbon solutions and their lubricating properties》 was written by Nakayama, Keiji; Studt, Peter. HPLC of Formula: 591-70-8 And the article was included in Wear on April 15 ,1987. The article conveys some information:

The adsorption is studied of polar cyclic organic compounds from hydrocarbon solutions on Fe powder without removal of any oxide film potentially present on the Fe surface. β-Naphthol is chemisorbed on the Fe surface. The adsorption isotherms of cyclohexanol, α-naphthylamine and quinoline can be fitted by a Langmuir equation. From the adsorption data the surface areas occupied by 1 mol. of these compounds are obtained. The polar cyclic compounds investigated reduce the friction of steel sliding over steel under boundary lubrication conditions, but straight chain compounds with polar end groups in cetane are better boundary lubricants. The load-carrying capacity of friction contacts lubricated with polar aromatic compounds depends on the geometry of the contact. Lubrication of flat contacts with aromatic compounds in cetane provides a higher load-carrying capacity than lubrication with stearic acid as an additive. This is due to the formation of C or decomposition products rich in C on the sliding surface by the aromatics Aromatic cyclic compounds give low friction at much higher bulk oil temperatures than straight chain compounds; this must be due to chemisorption or decomposition of the aromatics on the surface. Mixtures of β-naphthol and stearic acid or 1-octadecanol in cetane give low friction at up to 160° bulk oil temperature In the experimental materials used by the author, we found Octadecan-9-ol(cas: 591-70-8HPLC of Formula: 591-70-8)

Octadecan-9-ol(cas: 591-70-8) belongs to hydroxy-containing compounds. Hydroxy groups participate in the dehydration reactions that link simple biological molecules into long chains. The creation of a peptide bond to link two amino acids to make a protein removes the −OH from the carboxy group of one amino acid.HPLC of Formula: 591-70-8

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In 1994,Vox sanguinis included an article by Morfini, M; Mannucci, P M; Ciavarella, N; Schiavoni, M; Gringeri, A; Rafanelli, D; Di Bona, E; Chistolini, A; Tagliaferri, A; Rodorigo, G. Name: Octadecan-9-ol. The article was titled 《Prevalence of infection with the hepatitis C virus among Italian hemophiliacs before and after the introduction of virally inactivated clotting factor concentrates: a retrospective evaluation.》. The information in the text is summarized as follows:

In July 1985, all coagulation factor concentrates were withdrawn from the market in Italy and replaced with virally inactivated concentrates. A retrospective survey comparing the prevalence of the antibody to the hepatitis C virus (anti-HCV) in hemophiliacs multitransfused with nonvirally inactivated concentrates until 1985 with that in previously untreated hemophiliacs transfused exclusively with virally inactivated concentrates since 1985 has been conducted in 9 Italian hemophilia centers. The centers, which follow about one-fourth of all the Italian hemophiliacs, provided information about 708 patients infused for the first time before 1985 (group A) and 80 patients infused for the first time between 1985 and 1991 (group B). The prevalence of anti-HCV was 83% (591/708) in group A and 6% (5/80) in group B. For the 5 anti-HCV-seropositive patients from group B, dry heating, hydrophobic interaction chromatography plus dry heating (2 patients), hot vapor and pasteurization were the virucidal methods used for the concentrates implicated in HCV transmission. In the case associated with pasteurization, there is the possibility of intrafamilial transmission of HCV. It appears from this retrospective analysis that there has been a substantial reduction in the risk of HCV transmission since the adoption of virucidal methods. However, these methods do not eliminate completely the risk, which might be further reduced by the recent adoption of anti-HCV screening for plasma donations used to manufacture concentrates. In the part of experimental materials, we found many familiar compounds, such as Octadecan-9-ol(cas: 591-70-8Name: Octadecan-9-ol)

Octadecan-9-ol(cas: 591-70-8) belongs to hydroxy-containing compounds. Hydroxy-containing compounds engage in intermolecular hydrogen bonding increasing the electrostatic attraction between molecules and thus to higher boiling and melting points than found for compounds that lack this functional group. Organic compounds, which are often poorly soluble in water, become water-soluble when they contain two or more hydroxy groups, as illustrated by sugars and amino acid.Name: Octadecan-9-ol

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The author of 《Chiral discrimination of secondary alcohols by both 1H-NMR and HPLC after labeling with a chiral derivatization reagent, 2-(2,3-anthracenedicarboximide)cyclohexane carboxylic acid》 were Ohtaki, Takashi; Akasaka, Kazuaki; Kabuto, Chizuko; Ohrui, Hiroshi. And the article was published in Chirality in 2005. Recommanded Product: 591-70-8 The author mentioned the following in the article:

Enantiomeric discrimination of chiral secondary alcs. was performed by both reversed-phase HPLC and 1H-NMR after labeling with a chiral fluorescent derivatization reagent, 2-(2,3-anthracenedicarboximide)cyclohexanecarboxylic acid. It was possible to discriminate by HPLC the chirality of alcs. up to C30 having a chiral hydroxyl group at the middle of the straight alkyl chain, and by 1H-NMR, alcs. up to C16. For alcs. having one straight alkyl and one isoalkyl group with the same carbon numbers at both sides of a hydroxyl group, it was possible to discriminate the chiralities of alcs. up to C19 by both 1H-NMR and HPLC. The 1H-NMR methods also made it possible to determine absolute configurations empirically. In the experimental materials used by the author, we found Octadecan-9-ol(cas: 591-70-8Recommanded Product: 591-70-8)

Octadecan-9-ol(cas: 591-70-8) belongs to hydroxy-containing compounds. Hydroxy groups participate in the dehydration reactions that link simple biological molecules into long chains.Recommanded Product: 591-70-8 The joining of a fatty acid to glycerol to form a triacylglycerol removes the −OH from the carboxy end of the fatty acid.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

The author of 《Two predicted transmembrane domains exclude very long chain fatty acyl-CoAs from the active site of mouse wax synthase》 were Kawelke, Steffen; Feussner, Ivo. And the article was published in PLoS One in 2015. SDS of cas: 591-70-8 The author mentioned the following in the article:

Wax esters are used as coatings or storage lipids in all kingdoms of life. They are synthesized from a fatty alc. and an acyl-CoA by wax synthases. In order to get insights into the structure-function relationships of a wax synthase from Mus musculus, a domain swap experiment between the mouse acyl-CoA:wax alc. acyltransferase (AWAT2) and the homologous mouse acyl-CoA:diacylglycerol O-acyltransferase 2 (DGAT2) was performed. This showed that the substrate specificity of AWAT2 is partially determined by two predicted transmembrane domains near the amino terminus of AWAT2. Upon exchange of the two domains for the resp. part of DGAT2, the resulting chimeric enzyme was capable of incorporating up to 20% of very long acyl chains in the wax esters upon expression in S. cerevisiae strain H1246. The amount of very long acyl chains in wax esters synthesized by wild type AWAT2 was negligible. The effect was narrowed down to a single amino acid position within one of the predicted membrane domains, the AWAT2 N36R variant. Taken together, we provide first evidence that two predicted transmembrane domains in AWAT2 are involved in determining its acyl chain length specificity.Octadecan-9-ol(cas: 591-70-8SDS of cas: 591-70-8) was used in this study.

Octadecan-9-ol(cas: 591-70-8) belongs to hydroxy-containing compounds. Hydroxy groups participate in the dehydration reactions that link simple biological molecules into long chains. The creation of a peptide bond to link two amino acids to make a protein removes the −OH from the carboxy group of one amino acid.SDS of cas: 591-70-8

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Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

《Boundary lubrication: adsorption of oil additives on steel and ceramic surfaces and its influence on friction and wear》 was written by Studt, P.. Synthetic Route of C18H38O And the article was included in Tribology International on April 30 ,1989. The article conveys some information:

The influence on the friction of adsorbed films of polar organic compounds on surfaces sliding or rolling over each other is dependent on the structure of the adsorbed species. Straight-chain compounds with polar end groups, long chain compounds with the polar group in the middle of the chain and polar cyclic organic compounds behave quite differently. The efficiency of extreme pressure additives, is dependent partly on their concentration on the mating surfaces. An increase of adsorbability of these additives, which concentrates them at the metal-oil interface, increases their efficiency. The boundary lubrication of ceramics by adsorbed films is strongly influenced by the nature of the ceramic (ion lattice or covalently bonded crystal). The experimental part of the paper was very detailed, including the reaction process of Octadecan-9-ol(cas: 591-70-8Synthetic Route of C18H38O)

Octadecan-9-ol(cas: 591-70-8) belongs to hydroxy-containing compounds. Hydroxy groups participate in the dehydration reactions that link simple biological molecules into long chains. The creation of a peptide bond to link two amino acids to make a protein removes the −OH from the carboxy group of one amino acid.Synthetic Route of C18H38O

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Recommanded Product: Octadecan-9-olOn November 30, 2014 ,《A general method for the synthesis of enantiopure aliphatic chain alcohols with established absolute configurations. Part 2, via catalytic reduction of acetylene alcohol MαNP esters》 appeared in Tetrahedron: Asymmetry. The author of the article were Akagi, Megumi; Sekiguchi, Satoshi; Taji, Hiromi; Kasai, Yusuke; Kuwahara, Shunsuke; Watanabe, Masataka; Harada, Nobuyuki. The article conveys some information:

A general method for synthesizing enantiopure (100% ee) aliphatic alcs. with established absolute configurations has been developed and applied to alcs. CH3(CH2)n-CH(OH)-(CH2)mCH3, the enantiomeric discrimination of which is the most difficult, if m = n + 1 and n is large. Racemic saturated alcs. with short chains could be directly enantioresolved as (S)-(+)-2-methoxy-2-(1-naphthyl)propionic acid [MαNP acid (I)] esters by HPLC on silica gel, and their absolute configurations were simultaneously determined by 1H NMR diamagnetic anisotropy. However, the application of this powerful MαNP ester method to alcs. with long chains was difficult, because of smaller values of the separation factor α. In such cases, the use of the corresponding acetylene alc. MαNP esters was crucial. Acetylene alc. MαNP esters were largely separated by HPLC on silica gel, and their absolute configurations were unambiguously determined by 1H NMR as reported in the Part 1 paper. The MαNP esters obtained with established absolute configurations were catalytically hydrogenated to yield saturated alc. MαNP esters. It was evidenced that no racemization occurred at the stereogenic center of the alc. moiety during catalytic hydrogenation, by the co-injection of MαNP esters in HPLC. From the MαNP esters obtained, enantiopure (100% ee) aliphatic chain alcs. with established absolute configurations were recovered. Although the [α]D values of these alcs. were too small for the identification of the enantiomers, it was clarified that the anal. HPLC of MαNP esters is useful for identification in most cases. In the experimental materials used by the author, we found Octadecan-9-ol(cas: 591-70-8Recommanded Product: Octadecan-9-ol)

Octadecan-9-ol(cas: 591-70-8) belongs to hydroxy-containing compounds. Hydroxy groups participate in the dehydration reactions that link simple biological molecules into long chains. The joining of a fatty acid to glycerol to form a triacylglycerol removes the −OH from the carboxy end of the fatty acid.Recommanded Product: Octadecan-9-ol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Taylor, Nicole M; Enns, Leah N published an article in Child neuropsychology. The title of the article was 《Factors predictive of a fetal alcohol spectrum disorder diagnosis: Parent and teacher ratings.》.Application of 591-70-8 The author mentioned the following in the article:

Diagnostic assessment in Fetal Alcohol Spectrum Disorder (FASD) is informed by multidisciplinary assessment incorporating objective (i.e., test measures) and subjective means, such as parent and teacher behavior ratings. The purpose of this study was to extend our previous neuropsychological test findings by identifying parent and teacher ratings of academic achievement, attention, executive functioning, and adaptive functioning as predictors of an FASD diagnosis. The charts of 315 children and adolescents with prenatal alcohol exposure (PAE) who underwent assessment for FASD were retrospectively reviewed. Direct logistic regressions analyzed the contribution of different ratings on the likelihood of an FASD diagnosis. The results suggest that a number of rating measures do contribute toward accurately differentiating those with FASD from within a PAE population, including teacher ratings of learning problems, inattention, and adaptive skills. The classification accuracy for each regression was clinically significant (59.1-70.8%). Children with worse ratings on these variables are approximately 1.5 to 2 times more likely to receive an FASD diagnosis. Only teacher ratings (not parent) significantly contributed to whether a diagnosis was made, suggesting that teacher observational rating scales are a critical component of an FASD assessment. Together with our previous research examining neuropsychological evaluation and FASD diagnostic assessment, this study helps to further guide decisions to streamline care in multidisciplinary assessment and intervention planning. In the experimental materials used by the author, we found Octadecan-9-ol(cas: 591-70-8Application of 591-70-8)

Octadecan-9-ol(cas: 591-70-8) belongs to hydroxy-containing compounds. Hydroxy groups participate in the dehydration reactions that link simple biological molecules into long chains.Application of 591-70-8 The joining of a fatty acid to glycerol to form a triacylglycerol removes the −OH from the carboxy end of the fatty acid.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Application of 591-70-8On September 21, 2007 ,《1-Phenylethyl isocyanate is a powerful reagent for the chiral analysis of secondary alcohols and hydroxy fatty acids with remote stereogenic centres》 was published in Journal of Chromatography A. The article was written by Habel, Andreas; Spiteller, Dieter; Boland, Wilhelm. The article contains the following contents:

1-Phenylethyl isocyanate (1-PEIC), a chiral derivatization reagent for the resolution of secondary alcs. is a powerful tool to determine the configuration and enantiomeric excess of medium- to long-chain secondary alcs. by capillary gas chromatog. The separation of 1-phenylethylcarbamates (1-PECs) of secondary alcs. was systematically evaluated depending on the position of the stereogenic center in the mol., in alkanols (C15-18), alkenols (C15-18) and hydroxy fatty acids (C14-18). The successful separation of the diastereomeric carbamates of (±)-heptadecan-7-ol or (±)-12-hydroxyoctadecanoic acid Me ester by gas liquid chromatog. demonstrates the unique separation power for 1-PECs for analytes with remote stereogenic centers. Saturated derivatives showed consistently higher resolution factors than the corresponding unsaturated derivatives In the experimental materials used by the author, we found Octadecan-9-ol(cas: 591-70-8Application of 591-70-8)

Octadecan-9-ol(cas: 591-70-8) belongs to hydroxy-containing compounds. Hydroxy groups participate in the dehydration reactions that link simple biological molecules into long chains. The joining of a fatty acid to glycerol to form a triacylglycerol removes the −OH from the carboxy end of the fatty acid.Application of 591-70-8

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Related Products of 591-70-8On May 18, 2022 ,《Disparities and Early Engagement Associated with the 18- to 36-month High-risk Infant Follow-up Visit among Very Low Birthweight Infants in California.》 appeared in The Journal of pediatrics. The author of the article were Lakshmanan, Ashwini; Rogers, Elizabeth E; Lu, Tianyao; Gray, Erika; Vernon, Lelis; Briscoe, Heather; Profit, Jochen; Jocson, Maria A L; Hintz, Susan R. The article conveys some information:

OBJECTIVE: To determine follow-up rates for the high-risk infant follow-up (HRIF) visit at 18-36 months among infants with very low birthweights and identify factors associated with completion. STUDY DESIGN: We completed a retrospective cohort study using linked California Perinatal Quality of Care Collaborative neonatal intensive care unit, California Perinatal Quality of Care Collaborative California Children’s Services HRIF, and Vital Statistics Birth Cohort databases. We identified maternal, sociodemographic, neonatal, clinical, and HRIF program level factors associated with the 18- to 36-month follow-up using multivariable Poisson regression. RESULTS: From 2010 to 2015, among 19 284 infants with very low birthweight expected to attend at least 1 visit at 18-36 months, 10 249 (53%) attended. On multivariable analysis, factors independently associated with attendance at an 18- to 36-month visit included estimated gestational age (relative risk [RR], 1.21; 95% CI, 1.15-1.26; <26 weeks vs ≥31 weeks), maternal education (RR, 1.09; 95% CI, 1.06-1.12; college degree or more vs high school), distance from clinic (RR, 0.92; 95% CI, 0.89-0.97; fourth quartile vs first quartile), and Black non-Hispanic race vs White race (RR, 0.88; 95% CI, 0.84-0.92). However, completion of an initial HRIF visit within the first 12 months was the factor most strongly associated with completion of an 18- to 36-month visit (RR, 6.47; 95% CI, 5.91-7.08). CONCLUSIONS: In a California very low birthweight cohort, maternal education, race, and distance from the clinic were associated with sustained HRIF participation, but attendance at a visit by 12 months was the most significantly associated factor. These findings highlight the importance of early engagement with all families to ensure equitable follow-through for children born preterm. The experimental process involved the reaction of Octadecan-9-ol(cas: 591-70-8Related Products of 591-70-8)

Octadecan-9-ol(cas: 591-70-8) belongs to hydroxy-containing compounds. Hydroxy-containing compounds engage in intermolecular hydrogen bonding increasing the electrostatic attraction between molecules and thus to higher boiling and melting points than found for compounds that lack this functional group. Organic compounds, which are often poorly soluble in water, become water-soluble when they contain two or more hydroxy groups, as illustrated by sugars and amino acid.Related Products of 591-70-8

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

《Fundamental Time Scales Governing Organic Aerosol Multiphase Partitioning and Oxidative Aging》 was written by Zhang, Haofei; Worton, David R.; Shen, Steve; Nah, Theodora; Isaacman-Van Wertz, Gabriel; Wilson, Kevin R.; Goldstein, Allen H.. Recommanded Product: 591-70-8 And the article was included in Environmental Science & Technology on August 18 ,2015. The article conveys some information:

Traditional descriptions of organic aerosol (OA) gas-particle partitioning rely solely on thermodn. properties (e.g., volatility). Under realistic conditions, where phase partitioning is dynamic rather than static, OA transformation involves the interplay of multi-phase partitioning with oxidative aging. A key challenge is quantifying fundamental time scales for semi-volatile OA evaporation and oxidation This work used isomer-resolved product measurements of a series of normal alkanes (C18, 20, 22, 24) to distinguish between gas-phase and heterogeneous oxidation products formed by reaction with OH-. Product isomer distributions, when combined with evaporation and oxidation kinetics measurements, enable a quant. description of multi-phase time scales to be simulated using a single-particle kinetic model. Multi-phase partitioning and oxidative transformation of semi-volatile normal alkanes under laboratory conditions is largely controlled by the particle phase state, since heterogeneous oxidation and evaporation time scales occur on competing time scales (on the order of 10-1 h). This is in contrast to atm. conditions where heterogeneous oxidation time scales are expected to be much longer (on the order of 102 h), with gas-phase oxidation being the dominant process regardless of evaporation kinetics. Results demonstrated the dynamic nature of OA multi-phase partitioning and oxidative aging and showed fundamental time scales of these processes are crucial to reliably extend laboratory measurements of OA phase partitioning and aging to the atm. The experimental part of the paper was very detailed, including the reaction process of Octadecan-9-ol(cas: 591-70-8Recommanded Product: 591-70-8)

Octadecan-9-ol(cas: 591-70-8) belongs to hydroxy-containing compounds. Hydroxy-containing compounds engage in intermolecular hydrogen bonding increasing the electrostatic attraction between molecules and thus to higher boiling and melting points than found for compounds that lack this functional group.Recommanded Product: 591-70-8 Organic compounds, which are often poorly soluble in water, become water-soluble when they contain two or more hydroxy groups, as illustrated by sugars and amino acid.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts