Category: alcohols-buliding-blocks

Chakraborty, Shampa published the artcileRapid and efficient synthesis of 2,2-dimethylaminobenzazoles and 2,2-dimethylaminoazoles in a sustainable way, Synthetic Route of 96-20-8, the publication is Materials Research Innovations (2021), 25(2), 90-94, database is CAplus.

Reactions of 2-aminophenol, 2-aminobenzenethiol and other 2-substituted anilines, ethylene amines and amino acid containing 1,2 amino hydroxy groups with TBTU [2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluroniumtetrafluoroborate], easily formed corresponding benzazoles (single crystal X-ray structure) and azoles attached with a di-Me amino group at 2-position via a guanidine intermediate which cyclizes and aromatizes by eliminating one dimethylamino group to afford benzazoles and azoles. The nobality of the synthesis is, single step and can occur at ambient temperature

Materials Research Innovations 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, Synthetic Route of 96-20-8.

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

Weber, Christine published the artcileCarbohydrate-Based Initiators for the Cationic Ring-Opening Polymerization of 2-Ethyl-2-Oxazoline, Category: alcohols-buliding-blocks, the publication is Methods in Molecular Biology (New York, NY, United States) (2016), 49-59, database is CAplus and MEDLINE.

The advancement in the field of living and controlled polymerization techniques provides the opportunity for careful bottom-up design of polymers for biomedical applications according to their specific needs. This contribution describes the detailed methodol. to functionalize poly(2-ethyl-2-oxazoline), a polymer with properties very similar to polyethylene glycol, in a stereo-selective manner with a range of carbohydrates that can serve as biol. targeting units. The obtained building blocks can subsequently be applied for the synthesis of more complex polymeric architectures.

Methods in Molecular Biology (New York, NY, United States) 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 C5H12BrO3P, Category: alcohols-buliding-blocks.

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

Ihndris, Ray W. published the artcileEffect of promising insect repellents on plastics and paints, Related Products of alcohols-buliding-blocks, the publication is United States, Agricultural Research Service, [Report] ARS (1955), 27 pp., database is CAplus.

Action of 380 repellents on Lucite, cellulose acetate, and Vinylite after 48 h. of contact are tabulated (studies in 1946). Sixty-eight of the compounds did not change any of the plastics. Lucite was attacked by 261, cellulose acetate by 126, and Vinylite by 251. Only 99 compounds attacked all 3. Results of studies in 1953 are shown in a tabulation of effects on paint, Plexiglas, Vinylite, rayon, and Plastocel of 136 repellents which had not proved unsatisfactory since 1946 for some other reason. All but 2 compounds affected paint; one of them, octyl crotonate, affected only varnish and vinylite, and the other, 3,6,8-trimethyl-4-nonyne-3-6-diol affected only varnish. Vinylite was damaged by 107, Plexiglas by 58, rayon by 55, and Plasticel by 46. In other tests only 2 chems., 2-benzyloxynaphthalene and 2-iso-pentyloxynaphthalene, affected polyethylene, and they only slightly. Fourteen materials slightly stained nylon. In still other tests, Lucite and Plexiglas were found to differ slightly in their resistance to various agents.

United States, Agricultural Research Service, [Report] ARS published new progress about 70445-33-9. 70445-33-9 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic Chain, name is 3-((2-Ethylhexyl)oxy)propane-1,2-diol, and the molecular formula is C11H24O3, Related Products of alcohols-buliding-blocks.

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

Kirschenlohr, Heide L. published the artcileEstimation of systolic and diastolic free intracellular Ca²⁺ by titration of Ca²⁺ buffering in the ferret heart, COA of Formula: C6H3F2NO3, the publication is Biochemical Journal (2000), 346(2), 385-391, database is CAplus.

Spectroscopic Ca²⁺-indicators are thought to report values of free intracellular Ca²⁺ concentration ([Ca²⁺]_i) that may differ from unperturbed values because they add to the buffering capacity of the tissue. To check this for the heart we have synthesized a new ¹⁹F-labeled NMR Ca²⁺ indicator, 1,2-bis-[2-bis-(carboxymethyl)amino-4,5-difluorophenoxy]ethane (“4,5FBAPTA”), with a low affinity (K_d 2950 nM). The new indicator and four previously described ¹⁹F-NMR Ca²⁺ indicators 1,2-bis-[2-(1-carboxyethyl)(carboxymethyl)amino-5-fluorophenoxy]ethane (“DiMe-5FBAPTA”), 1,2-bis-[2-(1-carboxyethyl)(carboxymethyl)-amino-4-fluorophenoxy]ethane (“DiMe-4FBAPTA”), 1,2-bis-[2-bis(carboxymethyl)amino-5-fluorophenoxy]ethane (“5FBAPTA”) and 1,2-bis-[2-bis(carboxymethyl)amino-5-fluoro-4-methylphenoxy]ethane (“MFBAPTA”), with dissociation constants for Ca²⁺ ranging from 46 to 537 nM, have been used to measure [Ca²⁺]_i, over the range from less than 100 nM to more than 3 μM, in Langendorff-perfused ferret hearts (30°C, pH 7.4, paced at 1.0 Hz) by ¹⁹F-NMR spectroscopy. Loading hearts with indicators resulted in buffering of the Ca²⁺ transient. The measured end-diastolic and peak-systolic [Ca²⁺]_i were both pos. correlated with indicator K_d. The pos. correlations between indicator K_d and the measured end-diastolic and peak-systolic [Ca²⁺]_i were used to estimate the unperturbed end-diastolic and peak-systolic [Ca²⁺]_i by extrapolation to K_d = 0 (diastolic) and to K_d = ∞ (systolic) resp. The extrapolated values in the intact beating heart were 161 nM for end-diastolic [Ca²⁺]_i and 2650 nM for peak-systolic [Ca²⁺]_i, which agree well with values determined from single cells and muscle strips.

Biochemical Journal published new progress about 55346-97-9. 55346-97-9 belongs to alcohols-buliding-blocks, auxiliary class Fluoride,Nitro Compound,Benzene,Phenol, name is 4,5-Difluoro-2-nitrophenol, and the molecular formula is C6H3F2NO3, COA of Formula: C6H3F2NO3.

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

Thangavelu, Prabha published the artcileAnalytical method development and validation for the simultaneous estimation of salbutamol sulphate, guaifenesin, and ambroxol hydrochloride by RP-HPLC method in commercial oral liquid dosage form, Formula: C13H19Br2ClN2O, the publication is International Journal of Pharmaceutical Sciences and Research (2019), 10(1), 260-265, database is CAplus.

Salbutamol is a bronchodilator, Guaifenesin is an expectorant and Ambroxol is a mucolytic. Combination of these drugs is used in the formulation of cough syrups. In the literature, there is no method reported for the simultaneous estimation of the drugs in oral liquid dosage form. Hence, the present work is aimed to develop reverse phase HPLC method for the simultaneous determination of Salbutamol sulfate (SAL), Guaifenesin (GUA) and Ambroxol hydrochloride (AMB) in oral liquid dosage form and validation of the developed method. The chromatog. separation of the drugs was achieved with the mobile phase system sodium dihydrogen phosphate buffer pH 3.0: acetonitrile: methanol in the ratio of 65:10:25 with the flow rate of 1 mL/min and injection volume 10μL. An Inertsil C8-3 (250 × 4.6 mm, 5μm) column was used, and the detection wavelength was 276 nm. This system produced sharp peaks with good resolution, min. tailing and satisfactory retention times of SAL, GUA and AMB were found to be 3.157, 9.949 and 11.883 min resp. indicating the suitability of the system. The developed method was validated for various parameters accuracy, precision, linearity, robustness, and specificity as per ICH guidelines.

International Journal of Pharmaceutical Sciences and Research published new progress about 23828-92-4. 23828-92-4 belongs to alcohols-buliding-blocks, auxiliary class Membrane Transporter/Ion Channel,Sodium Channel, name is trans-4-((2-Amino-3,5-dibromobenzyl)amino)cyclohexanol hydrochloride, and the molecular formula is C18H26ClN3O, Formula: C13H19Br2ClN2O.

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

Armbruster, Michael R. published the artcileIsobaric 4-Plex Tagging for Absolute Quantitation of Biological Acids in Diabetic Urine Using Capillary LC-MS/MS, Application In Synthesis of 621-37-4, the publication is ACS Measurement Science Au (2022), 2(3), 287-295, database is CAplus and MEDLINE.

Isobaric labeling in mass spectrometry enables multiplexed absolute quantitation and high throughput, while minimizing full scan spectral complexity. Here, we use 4-plex isobaric labeling with a fixed pos. charge tag to improve quantitation and throughput for polar carboxylic acid metabolites. The isobaric tag uses an isotope-encoded neutral loss to create mass-dependent reporters spaced 2 Da apart and was validated for both single- and double-tagged analytes. Tags were synthesized inhouse using deuterated formaldehyde and Me iodide in a total of four steps, producing cost-effective multiplexing. No chromatog. deuterium shifts were observed for single- or double-tagged analytes, producing consistent reporter ratios across each peak. Perfluoropentanoic acid was added to the sample to drastically increase retention of double-tagged analytes on a C18 column. Excess tag was scavenged and extracted using hexadecyl chloroformate after reaction completion. This allowed for removal of excess tag that typically causes ion suppression and column overloading. A total of 54 organic acids were investigated, producing an average linearity of 0.993, retention time relative standard deviation (RSD) of 0.58%, and intensity RSD of 12.1%. This method was used for absolute quantitation of acid metabolites comparing control and type 1 diabetic urine. Absolute quantitation of organic acids was achieved by using one isobaric lane for standards, thereby allowing for anal. of six urine samples in two injections. Quantified acids showed good agreement with previous work, and six significant changes were found. Overall, this method demonstrated 4-plex absolute quantitation of acids in a complex biol. sample.

ACS Measurement Science Au 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, Application In Synthesis of 621-37-4.

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

Armbruster, Michael R. published the artcileIsobaric 4-Plex Tagging for Absolute Quantitation of Biological Acids in Diabetic Urine Using Capillary LC-MS/MS, Safety of 2-Hydroxy-2-phenylacetic acid, the publication is ACS Measurement Science Au (2022), 2(3), 287-295, database is CAplus and MEDLINE.

Isobaric labeling in mass spectrometry enables multiplexed absolute quantitation and high throughput, while minimizing full scan spectral complexity. Here, we use 4-plex isobaric labeling with a fixed pos. charge tag to improve quantitation and throughput for polar carboxylic acid metabolites. The isobaric tag uses an isotope-encoded neutral loss to create mass-dependent reporters spaced 2 Da apart and was validated for both single- and double-tagged analytes. Tags were synthesized inhouse using deuterated formaldehyde and Me iodide in a total of four steps, producing cost-effective multiplexing. No chromatog. deuterium shifts were observed for single- or double-tagged analytes, producing consistent reporter ratios across each peak. Perfluoropentanoic acid was added to the sample to drastically increase retention of double-tagged analytes on a C18 column. Excess tag was scavenged and extracted using hexadecyl chloroformate after reaction completion. This allowed for removal of excess tag that typically causes ion suppression and column overloading. A total of 54 organic acids were investigated, producing an average linearity of 0.993, retention time relative standard deviation (RSD) of 0.58%, and intensity RSD of 12.1%. This method was used for absolute quantitation of acid metabolites comparing control and type 1 diabetic urine. Absolute quantitation of organic acids was achieved by using one isobaric lane for standards, thereby allowing for anal. of six urine samples in two injections. Quantified acids showed good agreement with previous work, and six significant changes were found. Overall, this method demonstrated 4-plex absolute quantitation of acids in a complex biol. sample.

ACS Measurement Science Au published new progress about 90-64-2. 90-64-2 belongs to alcohols-buliding-blocks, auxiliary class Carboxylic acid,Benzene,Alcohol,Natural product, name is 2-Hydroxy-2-phenylacetic acid, and the molecular formula is C8H8O3, Safety of 2-Hydroxy-2-phenylacetic acid.

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

Mei, Jianguo published the artcileSynthesis of isoindigo-based oligothiophenes for molecular bulk heterojunction solar cells, Recommanded Product: 5,5′-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2′-bithiophene, the publication is Organic Letters (2010), 12(4), 660-663, database is CAplus and MEDLINE.

Isoindigo, as a new electron acceptor unit for organic electronic materials, was integrated into two low-energy gap oligothiophenes. Optical and electrochem. studies of the newly synthesized oligomers demonstrate broad absorption through the visible spectrum, along with appropriate energy levels, as desired for light harvesting donors for organic solar cells when blended with [6,6]-phenyl-C₆₁-butyric acid Me ester (PC₆₀BM). Mol. heterojunction solar cells were fabricated using these oligomers and exhibit a power conversion efficiency up to 1.76% with a V_oc of 0.74 V, I_sc of 6.3 mA/cm² and fill factor of 0.38.

Organic Letters 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, Recommanded Product: 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

Stec, Wojciech J. published the artcileDiastereomers of Nucleoside 3′-O-(2-Thio-1,3,2-oxathia(selena)phospholanes): Building Blocks for Stereocontrolled Synthesis of Oligo(nucleoside phosphorothioate)s, Name: 2-Methyl-2-sulfanylpropan-1-ol, the publication is Journal of the American Chemical Society (1995), 117(49), 12019-29, database is CAplus.

Diastereomerically pure 5′-O-DMT-nucleoside 3′-O-(2-thio-1,3,2-oxathiaphospholanes) I ( B = T, Ade^bz, Cyt^bz) were used for the synthesis of stereo-regular oligo(nucleoside phosphorothioate)s (S-Oligos). The oxathiaphospholane ring-opening condensation requires the presence of strong organic base, preferably DBU. The yield of a single coupling step is ca. 95% and resulting S-Oligos are free of nucleobase- and sugar-phosphorothioate backbone modifications. The diastereomeric purity of products was estimated on the basis of diastereoselective degradation with Nuclease P1 and a mixture of snake venom phosphodiesterase and Serratia marcescens endonuclease. Thermal dissociation studies of hetero-duplexes S-Oligos/DNA and S-Oligos/RNA showed that their stability is stereochem.- and sequence-dependent.

Journal of the American Chemical Society published new progress about 73303-88-5. 73303-88-5 belongs to alcohols-buliding-blocks, auxiliary class Thiol,Aliphatic hydrocarbon chain,Alcohol, name is 2-Methyl-2-sulfanylpropan-1-ol, and the molecular formula is C5H10Cl3O3P, Name: 2-Methyl-2-sulfanylpropan-1-ol.

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

Durcik, Martina published the artcileLast piece in the puzzle of bisphenols BPA, BPS and BPF metabolism: Kinetics of the in vitro sulfation reaction, Product Details of C12H10O4S, the publication is Chemosphere (2022), 303(Part_2), 135133, database is CAplus and MEDLINE.

Bisphenols are endocrine-disrupting chems. ubiquitously present in the environment, with the consequent exposure to humans. In humans, bisphenols are metabolized to glucuronide and sulfate conjugates. Recent studies indicate that sulfation represents an important bisphenol metabolic pathway for the most vulnerable humans, such as the growing fetus. Our aim was to evaluate sulfation kinetics of commonly detected bisphenols in biol. samples: bisphenol A (BPA), bisphenol S (BPS), and bisphenol F (BPF). Furthermore, we evaluated estrogenic agonist potencies and long-term stability of these bisphenol sulfates. BPS and BPF sulfates were prepared by chem. synthesis. Sulfation kinetics of the selected bisphenols were tested in pooled human liver cytosol, as a source for soluble phase II enzymes, including liver sulfotransferases, with quantification by LC-MS/MS. A validated transactivation assay using the hERα-Hela 9903 cell line was used to determine estrogenic agonist potencies. Moreover, BPA, BPS, and BPF sulfate stabilities were examined under various conditions and during storage. In vitro sulfation of BPA and BPS followed Michaelis-Menten kinetics; BPF sulfation followed a substrate inhibition model. Sulfation rates were comparable for these bisphenols, although their K_M values indicated some large differences in affinities. BPA and BPS sulfates are not hERα agonists. The bisphenol sulfates can be considered stable for at least 2 days under these tested media conditions. These data indicate that bisphenol sulfation is an important route in their biotransformation. Compared to glucuronidation, these bisphenols show slower sulfation rates but similar K_M values. BPA and BPS metabolic biotransformation by sulfation provides their detoxification as they are without estrogenic activities.

Chemosphere 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, Product Details of C12H10O4S.

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