Author: tianli

Carnero Ruiz, C. published the artcileCharacterization of mixed nonionic surfactants n-octyl-β-D-thioglucoside and octaethylene-glycol monododecyl ether: Micellization and microstructure, Computed Properties of 85618-21-9, the publication is Journal of Colloid and Interface Science (2011), 361(1), 178-185, database is CAplus and MEDLINE.

Mixed micelles of n-octyl-β-D-thioglucoside (OTG) and octaethylene-glycol monododecyl ether (C₁₂E₈), two nonionic surfactants belonging to the alkyl glucosides and polyoxyethylene alkyl ether families, resp., were studied by using light scattering and fluorescence probe techniques. From the determination of the critical micelle concentration (cmc), by the well-established pyrene 1:3 ratio method, the mixed system behaves ideally, the micellization process being clearly controlled by the ethoxylated surfactant. The micellar hydrodynamic radius as a function of temperature, composition and concentration was obtained by dynamic light scattering measurements. The micellar size increases with temperature, this growth being more pronounced as the relative proportion of the ethoxylated surfactant was increased. The behavior of the micellar size with the total surfactant concentration also is dependent on temperature and composition The clouding temperature, characteristic of the ethoxylated surfactants, was increased with the addition of the sugar surfactant. Lastly, possible structural changes in the micellar palisade layer were examined by steady-state fluorescence anisotropy in conjunction with time-resolved fluorescence studies with the hydrophobic probe coumarin 6 (C6). The participation of the ethoxylated surfactant induces a slightly more polar palisade layer, whereas the probe carries out a faster rotational reorientation as a result of a less compact environment. All these observations were attributed to the different structure of the head groups of both surfactants and, as a consequence, to their different hydration.

Journal of Colloid and Interface Science published new progress about 85618-21-9. 85618-21-9 belongs to alcohols-buliding-blocks, auxiliary class Tetrahydropyran,Chiral,sulfides,Alcohol, name is (2R,3S,4S,5R,6S)-2-(Hydroxymethyl)-6-(octylthio)tetrahydro-2H-pyran-3,4,5-triol, and the molecular formula is C14H28O5S, Computed Properties of 85618-21-9.

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

Estrada, Ernesto published the artcileAutomatic extraction of structural alerts for predicting chromosome aberrations of organic compounds, COA of Formula: C8H19NO, the publication is Journal of Molecular Graphics & Modelling (2006), 25(3), 275-288, database is CAplus and MEDLINE.

We use the topol. sub-structural mol. design (TOPS-MODE) approach to formulate structural alert rules for chromosome aberration (CA) of organic compounds First, a classification model was developed to group chems. as active/inactive respect to CA. A procedure for extracting structural information from orthogonalized TOPS-MODE descriptors was then implemented. The contributions of bonds to CA in all the mols. studied were then generated using the orthogonalized classification model. Using this information we propose 22 structural alert rules which are ready to be implemented in expert systems for the automatic prediction of CA. They include, among others, structural alerts for N-nitroso compounds (ureas, urethanes, guanidines, triazines), nitro compounds (aromatic and heteroaromatic), alkyl esters or phosphoric acids, alkyl methanesulfonates, sulfonic acids and sulfonamides, epoxides, aromatic amines, azaphenanthrene hydrocarbons, etc. The chemico-biol. anal. of some of the structural alerts found is also carried out showing the potential of TOPS-MODE as a knowledge generator.

Journal of Molecular Graphics & Modelling published new progress about 4543-95-7. 4543-95-7 belongs to alcohols-buliding-blocks, auxiliary class Amine,Aliphatic hydrocarbon chain,Alcohol, name is 4-(Butylamino)butan-1-ol, and the molecular formula is C8H19NO, COA of Formula: C8H19NO.

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

Mallah, Ramnath R. published the artcileNon-linear optical response of meso hybrid BODIPY: Synthesis, photophysical, DFT and Z scan study, COA of Formula: C11H8O3, the publication is Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy (2019), 126-140, database is CAplus and MEDLINE.

Hybrid meso BODIPY dyes are synthesized and their linear and nonlinear optical properties are studied. Time-resolved fluorescence lifetime decay is identical for all dyes irresp. of meso substituents. The Z-scan experiment performed to calculate the nonlinear absorption coefficient (β) and 3rd-order nonlinear susceptibility (χ³). Global hybrid (B3LYP and BHHLYP) and range-separated hybrid (CAM-B3LYP) functional with the basis set 6-311++G(d,p) was employed to determine the theor. linear and nonlinear optical properties. The computed β₀ value of all the 3 dyes is superior to that of urea (βo = 0.371 × 10^-30 esu). Introduction of meso substituent directly affects the polarizability and 2nd-order hyperpolarizability of the dyes. Thermal and reorientational effect of the studied NLOphoric dyes were studied.

Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy published new progress about 86-48-6. 86-48-6 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment,Natural product, name is 1-Hydroxy-2-naphthoic acid, and the molecular formula is C11H8O3, COA of Formula: C11H8O3.

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

Sobhi, Hamid Reza published the artcileApplication of a modified MWCNT-based d-μSPE procedure for determination of bisphenols in soft drinks, Computed Properties of 80-09-1, the publication is Food Chemistry (2022), 132644, database is CAplus and MEDLINE.

Herein, a facile dispersive micro-solid phase extraction (d-μSPE) procedure using carboxylated multi-walled carbon nanotubes modified with silver nanoparticles (Ag/MWCNTs-COOH) was successfully developed for the adsorption and subsequent determination of low levels of two well-known contaminants, namely bisphenol A and S (BPA and BPS) in water and soft drink samples. The detection and measurement of the above-mentioned compounds were performed by HPLC-UV instrument. The applied d-μSPE procedure has several advantages such as rapidity, high degree of sensitivity, precision and efficiency. A combination of polar/non-polar interactions seems to play a key role in the adsorption process. Under the optimized conditions, the calibration curves were linear over the concentration range of 1-500μg/L for the both targets. The practical limit of quantifications (LOQ) for the both analytes were determined to be 1.0μg/L. The average relative recoveries obtained from the fortified samples varied between 92 and 110% with the relative standard deviations (RSD%) of 2.9-9.5%.

Food Chemistry 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 C6H5BrN4, Computed Properties of 80-09-1.

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

Ahfad, Neda published the artcileA naphthylamide based fluorescent probe for detection of Al³⁺, Fe³⁺, and CN^– with high sensitivity and selectivity, Product Details of C11H8O3, the publication is Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy (2020), 117753, database is CAplus and MEDLINE.

A naphthylamide based fluorescent chemosensor, N,N′-(1,2-phenylene)bis(1-hydroxy-2-naphthamide) (H₄L), for detection of Fe³⁺ and Al³⁺ cations as well as CN^– anion is reported. This compound has been synthesized by a novel and facile synthetic method with high yield and characterized by FT-IR, ¹H NMR, elemental anal., and UV-Vis spectroscopy. It could detect Fe³⁺ and Al³⁺ ions in different media with different excitation and emission wavelengths. In DMSO solution, H₄L showed selective ON-OFF quenching of its 451 nm emission in the presence of Fe³⁺. On the other hand, in DMF solution, H₄L exhibited selective OFF-ON fluorescence upon the addition of Al³⁺, the intensity at 429 nm increases drastically by 24-fold. Also, among the anions, the probe can selectively distinguish CN^– by deprotonation of OH and NH groups, as proved by ¹H NMR titration TD-DFT calculation supports the UV-Vis and fluorescence measurements of the chemosensor.

Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy published new progress about 86-48-6. 86-48-6 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment,Natural product, name is 1-Hydroxy-2-naphthoic acid, and the molecular formula is C11H8O3, Product Details of C11H8O3.

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

Prasad, Durga published the artcileR-VAPOL-phosphoric acid based ¹H and ¹³C-NMR for sensing of chiral amines and acids, SDS of cas: 96-20-8, the publication is RSC Advances (2020), 10(4), 2303-2312, database is CAplus and MEDLINE.

Enantiomers have significant importance in pharmaceuticals, biol. and modern chem. and therefore distinguishing and quantifying the enantiomeric forms is of utmost importance. Herein, we propose diphenyl-3,3′-biphenanthryl-4,4′-diyl phosphate (R-VAPOL-PA) as a promising chiral solvating agent to discriminate amines and acids of poly-functional groups such as chiral amines, amino alcs. and hydroxy acids. The methodol. approach involves using the nature of hydrogen bonds and ion pairs as a mode of weak interactions to form diastereomers where the probe is associated with enantiomers. The resulting diastereomer difference in the NMR spectrum enables the chiral discrimination with a complete baseline peak separation and an accurate enantiomeric excess (ee) anal. We also carried out d. functional theory (DFT) calculations to understand the complex formation to explain enantiodiscrimination by analyzing the formation and stability of different chiral complexes. The binding energy differences between enantiomeric forms revealed by DFT calculations are qual. in agreement with the diastereomer difference in the NMR spectrum and unequivocally establishes the suggested exptl. protocol of R-VAPOL-PA-based enantiomeric discrimination.

RSC Advances published new progress about 96-20-8. 96-20-8 belongs to alcohols-buliding-blocks, auxiliary class Amine,Aliphatic hydrocarbon chain,Alcohol, name is 2-Aminobutan-1-ol, and the molecular formula is C4H11NO, SDS of cas: 96-20-8.

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

Khajavi-Shojaei, Shila published the artcileBiodegradation and phytotoxicity assessment of phenanthrene by biosurfactant-producing Bacillus pumilus 1529 bacteria, Product Details of C11H8O3, the publication is Chemistry and Ecology (2020), 36(5), 396-409, database is CAplus.

Phenanthrene is a toxic and mutagenic pollutant that can cause severe environmental and human health issues. The bioremediation of these polyaromatic hydrocarbons (PAHs) is possible with a biosurfactant by enhancing hydrophobicity. In this study, the production of a biosurfactant by Bacillus pumilus 1529 and its effects on the phenanthrene biodegradation pathway were examined Biosurfactant production was determined using hemolytic activity, emulsification index, and surface tension. For phenanthrene metabolite detection, samples at 0, 7, 14, and 21 incubation days were analyzed by gas chromatog.-mass (GC-mass) spectrometry. The results showed that Bacillus pumilus 1529 can reduce surface tension to 22.83 ± 1.1 mN m-1. Furthermore, the GC-mass spectrometry anal. showed that 1-hydroxy-2-naphthoic acid, benzaldehyde, o-phthalic acid, and phenylacetic acid were notable phenanthrene metabolites produced during phenanthrene biodegradation Biodegraded phenanthrene and its metabolites have a less toxic effect on the germination of safflower seeds than non-biodegraded phenanthrene. The IC50 of phenanthrene on seed germination after biodegradation was increased to approx. 113 mg L-1. In general, biodegradation aided by biosurfactant producing bacteria contributed to turning the toxic phenanthrene into less harmful metabolites with lower phytotoxicity effects, indicating that its application in the bioremediation of PAHs is promising.

Chemistry and Ecology published new progress about 86-48-6. 86-48-6 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment,Natural product, name is 1-Hydroxy-2-naphthoic acid, and the molecular formula is C11H8O3, Product Details of C11H8O3.

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

Kovacic, Ana published the artcileDegradation of bisphenol A and S in wastewater during cold atmospheric pressure plasma treatment, Application In Synthesis of 80-09-1, the publication is Science of the Total Environment (2022), 155707, database is CAplus and MEDLINE.

Developing novel, fast and efficient ecol. benign processes for removing organic contaminants is important for the continued development of water treatment. For this reason, this study investigates the implementation of Cold Atm. pressure Plasma (CAP) generated in ambient air as an efficient tool for the removal of Bisphenol A (BPA) and Bisphenol S (BPS)-known endocrine disrupting compounds in water and wastewater, by monitoring degradation kinetics and its transformation products. The highest removal efficiencies of BPA (>98%) and BPS (>70%) were obtained after 480 s of CAP exposure. A pseudo-first-order kinetic revealed that BPA (-k_t = 4.4 – 9.0 ms^-1) degrades faster than BPS (-k_t = 0.4 – 2.4 ms^-1) and that the degradation is also time- and CAP power-dependent, while the initial concentration or matrix type had a negligible effect. This study also tentatively identified three previously reported and one novel transformation product of BPA and four novel transformation products of BPS. Their postulated structures suggested similar breakdown mechanisms, i.e., hydroxylation followed by ring cleavage. The results demonstrate that CAP technol. is an effective process for the degradation of both BPA and BPS without the need for addnl. chems., indicating that CAP is a promising technol. for water and wastewater remediation worthy of further investigation and optimization.

Science of the Total Environment 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, Application In Synthesis of 80-09-1.

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

Nelson, Jade D. published the artcilePhoto-induced ring expansion of 1-triisopropylsilyloxy-1-azidocyclohexane: preparation of ε-caprolactam, Recommanded Product: Triisopropylsilanol, the publication is Organic Syntheses (2003), 165-175, database is CAplus.

The synthesis of lactams has attracted considerable attention in recent years. Despite the wide range of methodologies that have been examined for the synthesis of lactams, the Beckmann and Schmidt rearrangements still remain by far the most convenient and general methods. The strongly acidic conditions required for the Schmidt rearrangement often lead to undesired byproducts. This is a major limitation particularly with acid-labile substrates. A convenient and environmentally benign Schmidt rearrangement is reported in which the azidohydrin is prepared using a recyclable acid catalyst and trimethylsilyl azide. Photolysis of the azidocyclohexane results in the ring expansion, probably through the formation of a reactive nitrene. The byproducts from this reaction are gases or innocuous silanes. The main limitation with the method is that at present the ring expansion is not regioselective.

Organic Syntheses published new progress about 17877-23-5. 17877-23-5 belongs to alcohols-buliding-blocks, auxiliary class Protection and Derivatization Reagent, name is Triisopropylsilanol, and the molecular formula is C9H22OSi, Recommanded Product: Triisopropylsilanol.

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

Podjed, Nina published the artcileHydrogen Bonding and Polymorphism of Amino Alcohol Salts with Quinaldinate: Structural Study, Name: 2-Aminobutan-1-ol, the publication is Molecules (2022), 27(3), 996, database is CAplus and MEDLINE.

Three amino alcs., 3-amino-1-propanol, 2-amino-1-butanol and 2-amino-2-methyl-1-propanol were reacted with quinoline-2-carboxylic acid, known as quinaldinic acid. This combination yielded three salts, I [R = 3-hydroxypropylammonium, 1-hydroxymethyl propylammonium, 2-hydroxy-1,1-dimethyl-Et ammonium]. The 2-amino-1-butanol and 2-amino-2-methyl-1-propanol systems produced two polymorphs each, labeled as salts I [R = 1-hydroxymethyl propylammonium, 2-hydroxy-1,1-dimethyl-Et ammonium] resp. The compounds were characterized by X-ray structure anal. on single-crystal. The crystal structures of all consisted of protonated amino alcs. with NH³⁺ moiety and quinaldinate anions with carboxylate moiety. The used amino alcs. contained one OH and one NH₂ functional group, both proned to participate in hydrogen bonding. Therefore, similar connectivity patterns were expected. This proved to be true to some extent as all structures contained the NH³⁺•••^–OOC heterosynthon. Nevertheless, different hydrogen bonding and π•••π stacking interactions were observed, leading to distinct connectivity motifs. The largest difference in hydrogen bonding occurred between polymorphs , I [R = 2-hydroxy-1,1-dimethyl-Et ammonium] as they had only one heterosynton in common.

Molecules published new progress about 96-20-8. 96-20-8 belongs to alcohols-buliding-blocks, auxiliary class Amine,Aliphatic hydrocarbon chain,Alcohol, name is 2-Aminobutan-1-ol, and the molecular formula is C4H11NO, Name: 2-Aminobutan-1-ol.

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