Category: alcohols-buliding-blocks

Page, Zachariah A. published the artcileTuning the energy gap of conjugated polymer zwitterions for efficient interlayers and solar cells, Safety of 5,5′-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2′-bithiophene, the publication is Journal of Polymer Science, Part A: Polymer Chemistry (2015), 53(2), 327-336, database is CAplus.

Narrow band gap conjugated polymer zwitterions (CPZs) were synthesized by Suzuki polymerization and characterized to understand their electronic properties and utility as cathode modification layers in solar cells. The polymers were prepared from diketopyrrolopyrrole (DPP) and iso-indigo monomers containing sulfobetaine (SB) pendant groups, benefiting from an ion-rich aqueous phase in the polymerizations UV-vis absorption spectroscopy revealed the optical energy gap value for the CPZs, ranging from 1.7 to 1.2 eV. UPS of the CPZs as thin layers on Ag metal showed that the pendent zwitterions impart an interfacial dipole (Δ) to the metal and a work function reduction of ∼0.9 eV. OPVs fabricated using a conventional bulk heterojunction (BHJ) device architecture of ITO/PEDOT:PSS/(PTB7:PC₇₁BM)/CPZ/Ag led to dramatic improvements in power conversion efficiency (PCE) values relative to devices having bare Ag cathodes (PCE < 2% for bare Ag vs. 6.7-7.7% for CPZ/Ag). The benzothiadiazole (BT)/DPP polymer denoted as PT2BTDPPSB gave an optimal PCE of 7.7% in a conventional BHJ OPV device architecture fabricated on a Ag cathode. © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014.

Journal of Polymer Science, Part A: Polymer Chemistry published new progress about 239075-02-6. 239075-02-6 belongs to alcohols-buliding-blocks, auxiliary class Thiophene,Boronic acid and ester,Boronate Esters, name is 5,5′-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2′-bithiophene, and the molecular formula is C20H28B2O4S2, Safety of 5,5′-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2′-bithiophene.

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

Cao, Xiamin published the artcileEffects of High Hydrostatic Pressure Combined with Blanching on Microorganisms and Quality Attributes of Cloudy and Clear Strawberry Juices, Application In Synthesis of 597-52-4, the publication is International Journal of Food Properties (2014), 17(9), 1900-1920, database is CAplus.

Effects of high hydrostatic pressure combined with blanching on microorganisms and quality attributes of strawberry juices were investigated. High hydrostatic pressure at 600 MPa/4 min/ambient temperature inactivated total aerobic bacteria, coliform bacteria, yeasts, and molds in juices, ensuring their microbiol. safety. Under this condition, the cloudiness of cloudy juices increased by 54.49% and its viscosity decreased by 12.40%. Ascorbic acid decreased by 7.82% in cloudy juices and 12.60% in clear juices. The content of total volatile flavor compounds increased by 13.21% in cloudy juices and decreased by 6.92% in clear juices. No significant changes in anthocyanins, total phenols, and antioxidant capacity were found with high hydrostatic pressure treatment.

International Journal of Food Properties published new progress about 597-52-4. 597-52-4 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic Chain, name is Triethylsilanol, and the molecular formula is C6H16OSi, Application In Synthesis of 597-52-4.

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

Zhang, Jiukai published the artcileVolatolomics approach for authentication of not-from-concentrate (NFC) orange juice based on characteristic volatile markers using headspace solid phase microextraction (HS-SPME) combined with GC-MS, COA of Formula: C10H18O, the publication is Food Control (2022), 108856, database is CAplus.

The not-from-concentrate (NFC) juice is gradually becoming popular with consumers. However, adulteration of NFC juice with low-priced from-concentrate (FC) juice has been a long-lasting concern. In the present study, a volatolomics approach for authentication of NFC orange juice based on volatile organic compounds (VOCs) was established. A total of 107 VOCs were identified by solid phase microextraction (SPME) GC-Q-Exactive Orbitrap. Discrimination of NFC and FC orange juice could be accomplished by orthogonal partial least squares discriminant anal. (OPLS-DA). Furthermore, 10 VOCs were selected as potential characteristic markers in different juices, including 4 esters, 5 alcs. and 1 ketone. In addition, 13 VOCs with significant quant. difference was also screened. A partial least squares discriminant anal. (PLS-DA) model based on the above 23 VOCs achieved accuracy of 100% and 95.6% for calibration and prediction set, resp. These results suggested that the volatolomics approach has great potential for authentication of NFC juice.

Food Control published new progress about 106-25-2. 106-25-2 belongs to alcohols-buliding-blocks, auxiliary class Natural product, name is cis-3,7-Dimethyl-2,6-Octadien-1-Ol, and the molecular formula is C30H40N2O4, COA of Formula: C10H18O.

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

Lu, Hai-hua published the artcileCatalytic asymmetric intramolecular hydroarylations of ω-aryloxy- and arylamino-tethered α,β-unsaturated aldehydes, Recommanded Product: 3-Morpholinophenol, the publication is Chemistry – A European Journal (2009), 15(12), 2742-2746, database is CAplus and MEDLINE.

The first organocatalytic asym. intramol. hydroarylation of phenol- and aniline-derived enals I (X = O, NMe, NCH₂Ph, NBoc, etc.; R¹ = H, Me, NMe₂, 1-pyrrolidinyl, 4-morpholinyl, etc.; R² = H, Me, OMe, OEt) offers one of the most straightforward and atom-economic approaches to enantioenriched chromans and tetrahydroquinolines II with up to 96% ee.

Chemistry – A European Journal published new progress about 27292-49-5. 27292-49-5 belongs to alcohols-buliding-blocks, auxiliary class Morpholine,Benzene,Phenol, name is 3-Morpholinophenol, and the molecular formula is C10H13NO2, Recommanded Product: 3-Morpholinophenol.

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

Chainet, Fabien published the artcileDevelopment of heart-cutting multidimensional gas chromatography coupled to time of flight mass spectrometry for silicon speciation at trace levels in gasoline samples, Application In Synthesis of 597-52-4, the publication is Journal of Chromatography A (2012), 80-86, database is CAplus and MEDLINE.

To improve the understanding of hydrotreatment (HDT) catalyst poisoning by silicon species, these mols. must be characterized in petroleum products using powerful anal. systems. Heart-cutting gas chromatog. coupled to time of flight mass spectrometry (GC-GC/TOFMS) method equipped with a Deans switch (DS) system was developed for the direct characterization of target silicon compounds at trace level (μg/kg) in gasoline samples. This method was performed to identify silicon compounds never characterized before. After the selection of the 2nd dimension column using GC-GC-FID, GC-GC/TOFMS was performed. The calibration curves obtained by the GC-GC/TOFMS method were linear up to 1000 μg kg^-1. Limits of detection (LOD) were ranging from 5 to 33 μg/kg in spiked gasoline. The method provided sufficient selectivity and sensitivity to characterize known silicon compounds thanks to their specific ions and their retention times. The anal. of a naphtha sample by GC-GC/TOFMS showed cyclic siloxanes (D_n) as major compounds of PDMS thermal degradation with the occurrence of linear siloxanes, especially hexamethyldisiloxane (L₂), which was never characterized in petroleum products but already known as severe poison for catalyst.

Journal of Chromatography A published new progress about 597-52-4. 597-52-4 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic Chain, name is Triethylsilanol, and the molecular formula is C6H16OSi, Application In Synthesis of 597-52-4.

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

Téteau, Ophélie published the artcileBisphenol S Alters the Steroidome in the Preovulatory Follicle, Oviduct Fluid and Plasma in Ewes With Contrasted Metabolic Status., Recommanded Product: 4,4′-Sulfonyldiphenol, the publication is Frontiers in endocrinology (2022), 892213, database is MEDLINE.

Bisphenol A (BPA), a plasticizer and endocrine disruptor, has been substituted by bisphenol S (BPS), a structural analogue that had already shown adverse effects on granulosa cell steroidogenesis. The objective of this study was to assess the effect of chronic exposure to BPS, a possible endocrine disruptor, on steroid hormones in the ovary, oviduct and plasma using the ewe as a model. Given the interaction between steroidogenesis and the metabolic status, the BPS effect was tested according to two diet groups. Eighty adult ewes were allotted to restricted (R) and well-fed (WF) groups, that were further subdivided into two subgroups. Ewes were exposed to 50 µg BPS/kg/day in their diet (R50 and WF50 groups) or were unexposed controls (R0 and WF0 groups). After at least 3 months of BPS exposure, preovulatory follicular fluid, oviduct fluid and plasma were collected and steroid hormones were analyzed by gas chromatography coupled with tandem mass spectrometry (GC-MS/MS). A deleterious effect of restricted diet on the volume of oviduct fluid and numbers of pre-ovulatory follicles was observed. Exposure to BPS impaired estradiol concentrations in both follicular and oviduct fluids of well-fed ewes and progesterone, estradiol and estrone concentrations in plasma of restricted ewes. In addition, a significant interaction between metabolic status and BPS exposure was observed for seven steroids, including estradiol. In conclusion, BPS acts in ewes as an endocrine disruptor with differential actions according to metabolic status.

Frontiers in endocrinology 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 C22H18Cl2N2, Recommanded Product: 4,4′-Sulfonyldiphenol.

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

Bajkacz, Sylwia published the artcileSeparation and Determination of Chemopreventive Phytochemicals of Flavonoids from Brassicaceae Plants, Quality Control of 621-37-4, the publication is Molecules (2021), 26(16), 4734, database is CAplus and MEDLINE.

The main aim of this study was to develop a method for the isolation and determination of polyphenols-in particular, flavonoids present in various morphol. parts of plants belonging to the cabbage family (Brassicaceae). Therefore, a procedure consisting of maceration, acid hydrolysis and measurement of the total antioxidant capacity of plant extracts (using DPPH assay) was conducted. Qual. anal. was performed employing thin-layer chromatog. (TLC), which was presented to be a suitable methodol. for the separation and determination of chemopreventive phytochems. from plants belonging to the cabbage family. The study involved the anal. of 25 vegetal samples, including radish, broccoli, Brussels sprouts, kale, canola, kohlrabi, cabbage, Chinese cabbage, red cabbage, pak choi and cauliflower. In addition, selected flavonoids content in free form and bonded to glycosides was determined by using an RP-UHPLC-ESI-MS/MS method.

Molecules published new progress about 621-37-4. 621-37-4 belongs to alcohols-buliding-blocks, auxiliary class Carboxylic acid,Benzene,Phenol,Natural product, name is 3-Hydroxyphenylacetic acid, and the molecular formula is C8H8O3, Quality Control of 621-37-4.

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

Reading, Eamonn published the artcileThe Role of the Detergent Micelle in Preserving the Structure of Membrane Proteins in the Gas Phase, Computed Properties of 85618-21-9, the publication is Angewandte Chemie, International Edition (2015), 54(15), 4577-4581, database is CAplus and MEDLINE.

Despite the growing importance of the mass spectrometry of membrane proteins, it is not known how their transfer from solution into vacuum affects their stability and structure. To address this we have carried out a systematic investigation of ten membrane proteins solubilized in different detergents and used mass spectrometry to gain physicochem. insight into the mechanism of their ionization and desolvation. We show that the chem. properties of the detergents mediate the charge state, both during ionization and detergent removal. Using ion mobility mass spectrometry, we monitor the conformations of membrane proteins and show how the surface charge d. dictates the stability of folded states. We conclude that the gas-phase stability of membrane proteins is increased when a greater proportion of their surface is lipophilic and is consequently protected by the phys. presence of the micelle.

Angewandte Chemie, International Edition 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

Routti, Heli published the artcileEnvironmental Chemicals Modulate Polar Bear (Ursus maritimus) Peroxisome Proliferator-Activated Receptor Gamma (PPARG) and Adipogenesis in Vitro, Related Products of alcohols-buliding-blocks, the publication is Environmental Science & Technology (2016), 50(19), 10708-10720, database is CAplus and MEDLINE.

The authors studied interactions between polar bear peroxisome proliferator-activated receptor gamma (pbPPARG) and selected compounds using a luciferase reporter assay and predictions through mol. docking. Furthermore, the authors studied adipogenesis by liver and adipose tissue extracts from a polar bear and three synthetic mixtures of contaminants in murine 3T3-L1 preadipocytes and polar bear adipose tissue-derived stem cells (pbASCs). PCB153 and p,p’-DDE antagonized pbPPARG, although their predicted receptor-ligand affinity was weak. PBDEs, tetrabromobisphenol A, and PCB170 had a weak agonistic effect on pbPPARG, while hexabromocyclododecane, bisphenol A, oxychlordane, and endosulfan were weak antagonists. pbPPARG-mediated luciferase activity was suppressed by synthetic contaminant mixtures reflecting levels measured in polar bear adipose tissue, as were transcript levels of PPARG and the PPARG target gene fatty acid binding protein 4 (FABP4) in pbASCs. Contaminant extracts from polar bear tissues enhanced triglyceride accumulation in murine 3T3-L1 cells and pbASCs, whereas triglyceride accumulation was not affected by the synthetic mixtures Chem. characterization of extracts using non-target methods revealed presence of exogenous compounds that have previously been reported to induce adipogenesis. These compounds included phthalates, tonalide, and nonylphenol. In conclusion, major legacy contaminants in polar bear adipose tissue exert antagonistic effects on PPARG, but adipogenesis by a mixture containing emerging compounds may be enhanced through PPARG or other pathways.

Environmental Science & Technology published new progress about 1139-46-4. 1139-46-4 belongs to alcohols-buliding-blocks, auxiliary class Benzene,Phenol, name is 4-(2,4,4-Trimethylpentan-2-yl)benzene-1,2-diol, and the molecular formula is C14H22O2, Related Products of alcohols-buliding-blocks.

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

Mok, Sori published the artcileWithin- and between-person variability of urinary phthalate metabolites and bisphenol analogues over seven days: Considerations of biomonitoring study design, Related Products of alcohols-buliding-blocks, the publication is Environmental Research (2022), 112885, database is CAplus and MEDLINE.

Urine was used as a part of a human biomonitoring study based on the excretion kinetics of less-persistent contaminants, such as phthalates and bisphenol A (BPA). Despite the advantages of being non-invasive and easy to collect, urine can show a large variability of concentrations of phthalate metabolites and BPA within a person depending on sampling time. Therefore, it is essential to assess the variability of urinary concentrations for comprehensive sampling design in the context of exposure and risk assessments. In this study, 18 phthalate metabolites and eight BPs were measured in all spot urine (n = 401) collected from 12 participants for seven consecutive days to evaluate within- and between-person variabilities. The intraclass correlation coefficients (ICCs) for all spot urines were poor for monomethyl phthalate (ICC: 0.002) and BPA (0.121) but were moderate for monoethyl phthalate (0.514) and monobenzyl phthalate (0.462). Based on the results of di (2-ethylhexyl) phthalate (DEHP) metabolites, the half-life and differences in metabolic capability seem to affect the ICCs. Urinary mono (2-ethylhexyl) phthalate (MEHP), a primary metabolite of DEHP, was suggested as a short-term exposure marker of DEHP in our study. Creatinine- and sp. gr.-adjusted concentrations of phthalate metabolites and BPs resulted in increased ICCs, implying requirements for randomly collected spot urine. Most analytes in the first morning voids (FMVs) were correlated significantly with those in the daily composites, suggesting the feasibility of FMVs to estimate the daily exposure dose. This study facilitates a more comprehensive sampling design and data interpretation strategy for human biomonitoring studies.

Environmental Research 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, Related Products of alcohols-buliding-blocks.

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