Tag: M.W=250-300

Yan, KaKing published the artcileChiral Crystalline Sponges for the Absolute Structure Determination of Chiral Guests, Recommanded Product: ((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol, the publication is Journal of the American Chemical Society (2017), 139(33), 11341-11344, database is CAplus and MEDLINE.

Chiral crystalline sponges [(ZnI₂)₃(tpt)₂]_n·xG^* (1) where tpt = 2,4,6-tris(4-pyridyl)-1,3,5-triazine; G^* = (S,S) or (R,R)-4,5-dimethyl-2-(triphenylen-2-yl)-1,3-dioxolane, with preinstalled chiral references were synthesized. On the basis of the known configurations of the chiral references, the absolute structures of guest compounds absorbed in the pores of the crystalline sponges can be reliably determined without crystallization or chem. modification.

Journal of the American Chemical Society published new progress about 20880-92-6. 20880-92-6 belongs to alcohols-buliding-blocks, auxiliary class Other Aliphatic Heterocyclic,Chiral,Alcohol, name is ((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol, and the molecular formula is C21H37BO, Recommanded Product: ((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Gao, Qingwei published the artcileExploring the synergism of sunlight and electrooxidation on persulfate activation for efficient degradation of bisphenol S: Performance, Pathway, and mechanism, SDS of cas: 80-09-1, the publication is Chemical Engineering Journal (Amsterdam, Netherlands) (2022), 437(Part_1), 135318, database is CAplus.

Sulfate radical-based advanced oxidation processes had been widely applied in the water treatment. In this study, a novel solar-assisted electrooxidation process (SEOP) to activate peroxymonosulfate (PMS) or peroxydisulfate (PDS) was conducted for the degradation of bisphenol S (BPS). The SEOP with persulfate (PS) demonstrated its synergistic effect for BPS degradation, compared with the electrooxidation/PS and the solar process. The hydroxyl radical, sulfate radical (SO·-4), and singlet oxygen were regarded as primary active species in BPS degradation in SEOP with PS. The transition structure complex (persulfate*) on the anode promoted the efficiency of BPS degradation via the non-radical mechanism. The activation of PMS and PDS in SEOP was dominated through radical and non-radical mechanism, resp. To effectively supplement exptl. work with quantum chem. calculation, d. function theory (DFT) showed that the active sites mainly focused on the phenol ring of BPS. The energy barrier calculation indicated that BPS was more susceptible to be attacked by SO·-4 through electron transfer. BPS was mainly degraded by ring-opening, substitution, addition, C-C bond breaking, and decarboxylation reactions. Furthermore, the effective decrease in bio-toxicity of BPS intermediates in SEOP with PS was predicted. Experiments under various current densities, initial concentration of PS, electrolyte, and humic acid suggested the feasibility of SEOP with PS. BPS was degraded with lower energy consumption (0.18 kWh·m^-3·order^-1) in SEOP with PMS than that in SEOP with PDS (0.30 kWh·m^-3·order^-1) and without PS (0.38 kWh·m^-3 order^-1), resp. The SEOP with PS poses the feasible, convenient, and economic potential for the degradation of refractory pollutants.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about 80-09-1. 80-09-1 belongs to alcohols-buliding-blocks, auxiliary class Ploymers, name is 4,4′-Sulfonyldiphenol, and the molecular formula is C12H10O4S, SDS of cas: 80-09-1.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Weber, Edwin published the artcileVersatile and convenient lattice hosts derived from singly bridged triarylmethane frameworks. X-ray crystal structures of three inclusion compounds, Computed Properties of 596-38-3, the publication is Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999) (1990), 2167-77, database is CAplus.

A new family of host mols., based on the singly bridged triarylmethanol and triarylacetic acid frameworks, is described. These hosts form crystalline inclusions with a variety of uncharged organic mols. ranging from protic dipolar to apolar compounds (130 different species). The formation and stoichiometry depend in a systematic manner on structural parameters of the host, such as the nature of the functional group and the substituents, and on the substituent positions. The crystal structures of three inclusion compounds [I (R = OH)·benzene (8:3), I (R = OH)·dioxane (4:3), and I (R = CO₂H)·EtOH (1:1)] have been studied by x-ray diffraction. They reveal the building principles of the new inclusion family. In the crystals of I (R = OH)·benzene (8:3), the benzene is interstitially entrapped by H-bonded tetramer clusters of I (R = OH). Crystals of I (R = OH)·dioxane (4:3) are built of H-bonded 2:1 host-guest complexes including interstitial mols. of dioxane. In the case of I (R = CO₂H)·EtOH (1:1), the building principle is formation of 2:2 host-guest clusters via a twelve-membered H-bonded ring.

Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999) published new progress about 596-38-3. 596-38-3 belongs to alcohols-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Benzene,Alcohol, name is 9-Phenyl-9H-xanthen-9-ol, and the molecular formula is C17H18N2O6, Computed Properties of 596-38-3.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Argentini, M. published the artcileComparison of several methods for the synthesis of ω-iodine-123-heptadecanoic acid, Recommanded Product: 17-Hydroxyheptadecanoic acid, the main research area is iodoheptadecanoic acid iodine labeled; exchange iodine heptadecanoic acid.

Four different methods for the synthesis of ω-123I-heptadecanoic acid were presented: labeling of 17-bromoheptadecanoic acid with Na123I in solution or melt, reaction of Na123I with the tosylate of 17-hydroxyheptadecanoic acid, and phase-transfer catalyzed exchange of 17-iodoheptadecanoic acid with Na123I or H123I. The tosylate and phase transfer catalyst methods were superior to the former 2 methods.

Journal of Radioanalytical Chemistry published new progress about iodoheptadecanoic acid iodine labeled; exchange iodine heptadecanoic acid. 13099-34-8 belongs to class alcohols-buliding-blocks, name is 17-Hydroxyheptadecanoic acid, and the molecular formula is C17H34O3, Recommanded Product: 17-Hydroxyheptadecanoic acid.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Goni, Miguel A. published the artcileCutin-derived cupric oxide reaction products from purified cuticles and tree leaves, HPLC of Formula: 13099-34-8, the main research area is cutin copper oxide oxidation fatty acid; cuticle leaf oxidation fatty acid.

Long-chain (C16-C18) hydroxy fatty acids are obtained among the nonlignin-derived reaction products from the CuO oxidation of a variety of geochem. samples. To investigate the origin of these acids, the CuO reaction products of isolated cuticles and whole leaves were investigated. The reaction products from the CuO oxidation of purified apple (Malus pumila) cuticle include 16-hydroxyhexadecanoic acid, 10,16-dihydroxyhexadecanoic acid, 9,10,18-trihydroxyoctadec-12-enoic acid, and 9,10,18-trihydroxyoctadecanoic acid as major components. The distribution of these cutin-derived CuO reaction products is similar to the monomer compositions deduced from traditional methods of cutin anal. Oxidation of whole English Holly (Ilex aquifolium) leaves yields cutin-derived acidic reaction products (in addition to lignin-derived phenols) similar to those obtained from oxidation of the corresponding isolated cuticles, indicating that CuO oxidation of bulk plant tissue is a viable procedure of cutin anal. in geochem. applications.

Geochimica et Cosmochimica Acta published new progress about Apple. 13099-34-8 belongs to class alcohols-buliding-blocks, name is 17-Hydroxyheptadecanoic acid, and the molecular formula is C17H34O3, HPLC of Formula: 13099-34-8.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Roggatz, Christina C. published the artcileModelling Antifouling compounds of Macroalgal Holobionts in Current and Future pH Conditions, Recommanded Product: 17-Hydroxyheptadecanoic acid, the main research area is pH ocean acidification antifouling compound Rhodophyta Chlorophyta; Macroalgae; and macro-colonizers; antifouling; chemical communication; climate change; micro; ocean acidification.

Marine macroalgae are important ecosystem engineers in marine coastal habitats. Macroalgae can be neg. impacted through excessive colonization by harmful bacteria, fungi, microalgae, and macro-colonisers and thus employ a range of chem. compounds to minimize such colonization. Recent research suggests that environmental pH conditions potentially impact the functionality of such chem. compounds Here we predict if and how naturally fluctuating pH conditions and future conditions caused by ocean acidification will affect macroalgal (antifouling) compounds and thereby potentially alter the chem. defense mediated by these compounds We defined the relevant ecol. pH range, analyzed and scored the pH-sensitivity of compounds with antifouling functions based on their modelled chem. properties before assessing their distribution across the phylogenetic macroalgal groups, and the proportion of sensitive compounds for each investigated function. For some key compounds, we also predicted in detail how the associated ecol. function may develop across the pH range. The majority of compounds were unaffected by pH, but compounds containing phenolic and amine groups were found to be particularly sensitive to pH. Future pH changes due to predicted average open ocean acidification pH were found to have little effect. Compounds from Rhodophyta were mainly pH-stable. However, key algal species amongst Phaeophyceae and Chlorophyta were found to rely on highly pH-sensitive compounds for their chem. defense against harmful bacteria, microalgae, fungi, and biofouling by macro-organisms. All quorum sensing disruptive compounds were found the be unaffected by pH, but the other ecol. functions were all conveyed in part by pH-sensitive compounds For some ecol. keystone species, all of their compounds mediating defense functions were found to be pH-sensitive based on our calculations, which may not only affect the health and fitness of the host alga resulting in host breakdown but also alter the associated ecol. interactions of the macroalgal holobiont with micro and macrocolonisers, eventually causing ecosystem restructuring and the functions (e.g. habitat provision) provided by macroalgal hosts. Our study investigates a question of fundamental importance because environments with fluctuating or changing pH are common and apply not only to coastal marine habitats and estuaries but also to freshwater environments or terrestrial systems that are subject to acid rain. Hence, while warranting exptl. validation, this investigation with macroalgae as model organisms can serve as a basis for future investigations in other aquatic or even terrestrial systems.

Journal of Chemical Ecology published new progress about Acid rain. 13099-34-8 belongs to class alcohols-buliding-blocks, name is 17-Hydroxyheptadecanoic acid, and the molecular formula is C17H34O3, Recommanded Product: 17-Hydroxyheptadecanoic acid.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Spielvogel, Sandra published the artcileDistribution of cutin and suberin biomarkers under forest trees with different root systems, Formula: C17H34O3, the main research area is Fagus Picea Quercus Pseudotsuga root cutin suberin biomarker.

Differences in chem. composition of root compounds and root systems among tree species may affect organic matter (OM) distribution, source and composition in forest soils. The objective of this study was to elucidate the contribution of species specific cutin and suberin biomarkers as proxies for shoot- and root-derived organic carbon (OC) to soil OM at different depths with increasing distance to the stems of four different tree species. The contribution of cutin- and suberin-derived lipids to OM in a Cutanic Alisol was analyzed with increasing soil depth and distance to the stems of Fagus sylvatica L., Picea abies (L.) Karst., Quercus robur L. and Pseudotsuga menziesii (Mirb.) Franco. Cutin and suberin monomers of plants and soils were analyzed by alk. hydrolysis and subsequent gas chromatog.-mass spectrometry. The amount and distribution of suberin-derived lipids in soil clearly reflected the specific root system of the different tree species. The amount of cutin-derived lipids decreased strongly with soil depth, indicating that the input of leaf/needle material is restricted to the topsoil. In contrast to the suberin-derived lipids, the spatial pattern of cutin monomer contribution to soil OM did not depend on tree species. Our results document the importance of tree species as a main factor controlling the composition and distribution of OM in forest soils. They reveal the impact of tree species on root-derived OM distribution and the necessity to distinguish among different zones when studying soil OM storage in forests.

Plant and Soil published new progress about Biomarkers. 13099-34-8 belongs to class alcohols-buliding-blocks, name is 17-Hydroxyheptadecanoic acid, and the molecular formula is C17H34O3, Formula: C17H34O3.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Sweet, Charles R. published the artcileEndotoxin structures in the psychrophiles Psychromonas marina and Psychrobacter cryohalolentis contain distinctive acyl features, HPLC of Formula: 13099-34-8, the main research area is Psychromonas Psychrobacter lipid A endotoxin.

Lipid A is the essential component of endotoxin (Gram-neg. lipopolysaccharide), a potent immunostimulatory compound As the outer surface of the outer membrane, the details of lipid A structure are crucial not only to bacterial pathogenesis but also to membrane integrity. This work characterizes the structure of lipid A in two psychrophiles, Psychromonas marina and Psychrobacter cryohalolentis, and also two mesophiles to which they are related using MALDI-TOF MS and fatty acid Me ester (FAME) GC-MS. P. marina lipid A is strikingly similar to that of Escherichia coli in organization and total acyl size, but incorporates an unusual doubly unsaturated tetradecadienoyl acyl residue. P. cryohalolentis also shows structural organization similar to a closely related mesophile, Acinetobacter baumannii, however it has generally shorter acyl constituents and shows many acyl variants differing by single methylene (-CH2-) units, a characteristic it shares with the one previously reported psychrotolerant lipid A structure. This work is the first detailed structural characterization of lipid A from an obligate psychrophile and the second from a psychrotolerant species. It reveals distinctive structural features of psychrophilic lipid A in comparison to that of related mesophiles which suggest constitutive adaptations to maintain outer membrane fluidity in cold environments.

Marine Drugs published new progress about Cytotoxicity. 13099-34-8 belongs to class alcohols-buliding-blocks, name is 17-Hydroxyheptadecanoic acid, and the molecular formula is C17H34O3, HPLC of Formula: 13099-34-8.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Franich, Robert A. published the artcileConstituent acids of Pinus radiata stem cutin, Name: 17-Hydroxyheptadecanoic acid, the main research area is Pinus stem cutin carboxylic acid.

Stem cutin from P. radiata seedlings grown under winter and summer environmental conditions comprised n-alkanoic, (C10-C26), α,ω-alkanedioic (C14-C22), ω-hydroxyalkanoic (C12-C24), hydroxy-α,ω-alkanedioic, and polyhydroxyalkanoic acids. 9-Hydroxyheptadecane-1,17-dioic, 9-hydroxyoctadecene-1,18-dioic, 9-hydroxynonadecane-1,19-dioic, and 10,17-dihydroxyheptadecanoic acids are newly-identified constituents of gymnosperm cutin. Cutin grown under winter temperatures and photoperiod contained twice the amount of 9,16-dihydroxyhexadecanoic acid than that in summer-grown cutin, suggesting that the winter-grown cutin was formed from a highly crosslinked polymer, and that summer-grown cutin contained more linear polyester portions in the polymer.

Phytochemistry (Elsevier) published new progress about Carboxylic acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 13099-34-8 belongs to class alcohols-buliding-blocks, name is 17-Hydroxyheptadecanoic acid, and the molecular formula is C17H34O3, Name: 17-Hydroxyheptadecanoic acid.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Lin, Meei-Hua published the artcileComprehensive Mouse Skin Ceramide Analysis on a Solid-Phase and TLC Separation with High-Resolution Mass Spectrometry Platform, Formula: C17H34O3, the main research area is skin ceramide solid phase TLC mass spectrometry; Epidermal lipids; Mass spectrometry; Protein-bound lipids; Solid-phase extraction; Thin layer chromatography.

Lipidomic analyses by mass spectrometry (MS) of epidermal ceramides, a large family of lipids crucial to the permeability barrier of the skin, have been reported previously. To ensure the accuracy of lipid identification, we describe here the isolation of mouse newborn epidermal lipids followed by fractionation with solid-phase extraction columns, and lipidomic analyses by high-resolution MS for structural identification. We also describe here the employment of thin layer chromatog., an old but useful tool, in facilitating the structural characterization of the epidermal lipid species by MS.

Methods in Molecular Biology (New York, NY, United States) published new progress about High-resolution mass spectrometry. 13099-34-8 belongs to class alcohols-buliding-blocks, name is 17-Hydroxyheptadecanoic acid, and the molecular formula is C17H34O3, Formula: C17H34O3.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts