Tag: 100-200

HPLC of Formula: 110-03-2《Cyclization of alkanediols in high-temperature liquid water with high-pressure carbon dioxide》 was published in 2012. The authors were Yamaguchi, Aritomo;Hiyoshi, Norihito;Sato, Osamu;Shirai, Masayuki, and the article was included in《Catalysis Today》. The author mentioned the following in the article:

Dehydration of 1,4-butanediol to THF, 2R,5R-hexanediol to 2,5-dimethyltetrahydrofuran, and 2,5-dimethyl-2,5-hexanediol to 2,2,5,5-tetramethyltetrahydrofuran proceeded in high-temperature liquid water at 523 K. The formation rates of cyclic ethers were enhanced by high-pressure carbon dioxide (16.2 MPa). The order of dehydration rates in high-temperature water with carbon dioxide was tertiary > secondary > primary alc., which was the same order as the stability of corresponding carbocation species. And 2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) was used in the research process.

2,5-Dimethyl-2,5-hexanediol(cas:110-03-2) is used as an intermediate in the preparation of 2.5-Dimethyl-2.5-bis(tertbutyl-peroxy)hexane. It is also used in the synthesis of six- and seven-membered heterocyclic boron compounds.HPLC of Formula: 110-03-2

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Reference of 4-tert-Amylphenol《QSAR study on toxicities of alcohol and phenol compounds》 was published in 2016. The authors were Deng, Xiaolong;Chen, Yuan;Tan, Siqiao;Yuan, Zheming, and the article was included in《Huanjing Kexue Xuebao》. The author mentioned the following in the article:

The toxicities and features of compounds were generally presented as a non-linear relationship. The compound mol. descriptors calculated by the quantum chem. methods contained numerous irrelevant and redundant features. Although widely used, the current version of minimal redundancy maximal relevance (mRMR) feature selection method was not applicable for continuous dependent variable and the measurement of relevance and redundancy was incomparable. For quant. structure-activity relationship (QSAR), both dependent variables (toxicities) and independent variables (mol. descriptors) were usually continuous. Therefore, we used distance correlation (dCor) to replace Pearson correlation coefficient (R) to solve the measurement comparability between relevance and redundancy, and developed a new feature selection method named mRMR-dCor by combining mRMR with dCor in this work. Based on the inhouse feature selection method and support vector regression (SVR), the independent prediction results of three phenolic and alc. compounds datasets indicated that mRMR-dCor was superior to other reference feature selection methods in the prediction performance, with Q² of 0.954, 0.941 and 0.981, resp. Most of mol. descriptors selected by mRMR-dCor were also reported in previous literatures. Therefore, mRMR-dCor had broad application prospects in various domains such as QSAR and quant. structure-pharmacokinetics relationship. And 4-tert-Amylphenol (cas: 80-46-6) was used in the research process.

4-tert-acylphenol (cas:80-46-6) contains hydroxyl group. Owing to the presence of the polar OH alcohols are more water-soluble than simple hydrocarbons. Methanol, ethanol, and propanol are miscible in water. Butanol, with a four-carbon chain, is moderately soluble.Reference of 4-tert-Amylphenol

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Sansom, Catherine E.;Perry, Nigel B. published 《Analytical artefacts: H₂ carrier gas hydrogenation of plant volatiles during headspace solid-phase microextraction gas chromatography》. The research results were published in《Phytochemical Analysis》 in 2022.Formula: C10H22O The article conveys some information:

Hydrogen is the most efficient and economical carrier gas for gas chromatog. (GC). However, there are rare reports of artifact formation by hydrogenation of unsaturated compounds on GC. Head space solid-phase microextraction (HS-SPME) GC conditions for hydrogenation were studied. HS-SPME-GC-mass spectrometry (MS) analyses of common classes of plant volatiles were carried out using hydrogen (H₂) and helium (He) carrier gases with different SPME fiber coatings, GC inlet temperatures, and desorption times. Common phenylpropanoids, monoterpenes, and green leaf volatiles were hydrogenated to varying degrees on HS-SPME-GC with H₂ carrier gas and SPME fibers coated with polydimethylsiloxane (PDMS)/Carboxen (CAR), PDMS/divinylbenzene (DVB), and PDMS/CAR/DVB. No artifacts were detected using PDMS-only coated fibers or He carrier gas. Unsaturated plant volatiles may be hydrogenated on HS-SPME-GC when using H₂ carrier gas with SPME fiber coatings containing DVB polymer or CAR porous particles. Parallel analyses with He and H₂ carrier gases are recommended when developing HS-SPME-GC methods for plant volatiles, or use of PDMS-only coated fibers. The experimental procedure involved many compounds, such as 3,7-Dimethyloctan-3-ol (cas: 78-69-3) .

3,7-Dimethyloctan-3-ol(cas:78-69-3) is a fatty alcohol that is 3-octanol substituted by methyl groups at positions 3 and 7.Formula: C10H22O Metabolite observed in cancer metabolism. It has a role as a human metabolite.

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Alcohol – Wikipedia,
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Xie, Hao;Guo, Jiandong;Wang, Yu-Quan;Wang, Ke;Guo, Peng;Su, Pei-Feng;Wang, Xiaotai;Shu, Xing-Zhong published 《Radical Dehydroxylative Alkylation of Tertiary Alcohols by Ti Catalysis》 in 2020. The article was appeared in 《Journal of the American Chemical Society》. They have made some progress in their research.Synthetic Route of C10H22O The article mentions the following:

Deoxygenative radical C-C bond-forming reactions of alcs. are a long-standing challenge in synthetic chem., and the current methods rely on multistep procedures. Herein, we report a direct dehydroxylative radical alkylation reaction of tertiary alcs. This new protocol shows the feasibility of generating tertiary carbon radicals from alcs. and offers an approach for the facile and precise construction of all-carbon quaternary centers. The reaction proceeds with a broad substrate scope of alcs. and activated alkenes. It can tolerate a wide range of electrophilic coupling partners, including allylic carboxylates, aryl and vinyl electrophiles, and primary alkyl chlorides/bromides, making the method complementary to the cross-coupling procedures. The method is highly selective for the alkylation of tertiary alcs., leaving secondary/primary alcs. (benzyl alcs. included) and phenols intact. The synthetic utility of the method is highlighted by its 10-g-scale reaction and the late-stage modification of complex mols. A combination of experiments and d. functional theory calculations establishes a plausible mechanism implicating a tertiary carbon radical generated via Ti-catalyzed homolysis of the C-OH bond. The experimental procedure involved many compounds, such as 3,7-Dimethyloctan-3-ol (cas: 78-69-3) .

3,7-Dimethyloctan-3-ol(cas:78-69-3) is a fatty alcohol that is 3-octanol substituted by methyl groups at positions 3 and 7.Synthetic Route of C10H22O Metabolite observed in cancer metabolism. It has a role as a human metabolite.

Reference:
Alcohol – Wikipedia,
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Chacon, Manuel;Vazquez, Natalia;Persinal-Medina, Mairobi;Alonso-Alonso, Sergio;Alcalde, Ignacio;Merayo-Lloves, Jesus;Meana, Alvaro published 《In-house performance assessment of 3D QobuR-Reconstructed Human Cornea-Like Epithelium (RhCE) for the evaluation of eye hazard》 in 2022. The article was appeared in 《Toxicology In Vitro》. They have made some progress in their research.Application of 110-03-2 The article mentions the following:

To replace the Draize eye irritation test (OECD Test Guideline 404), several test methods based on reconstructed cornea-like epithelium (RhCE) have been developed and adopted in the OECD TG 492. The objective of this study was to establish the exptl. procedures and evaluate the performance assessment of QobuR-RhCE, an inhouse RhCE model to be used for the evaluation of eye hazard. We define the essential structural, functional and procedural elements of the test method components to help assuring that the proposed test method is based on the same concepts as the validated reference methods. Performance assessment was evaluated in accordance with the revised performance standards for the assessment of proposed similar or modified in vitro reconstructed human cornea-like epithelium and the min. list of reference chems. was evaluated. As result, the proposed method scored 93.3% sensibility, 60% specificity, 76.7% accuracy and 96.7% within-laboratory reproducibility (WLR), providing a similar performance in comparison to the validated reference methods. Addnl., we describe a secondary endpoint based on Transepithelial Elec. Resistance (TEER) that could be of use to better discriminate between irritants and non-irritants. Taken together the results indicate that the QobuR-RhCE test method is an accurate screening tool that can be used as a standalone alternative to evaluate ocular irritation. To complete the study, the researchers used 2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) .

2,5-Dimethyl-2,5-hexanediol(cas:110-03-2) was used in the synthesis of six- and seven-membered heterocyclic boron compounds containing intramolecular N-B bond.Application of 110-03-2

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Alcohol – Wikipedia,
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Kelley, Keven M.;Stenson, Alexandra C.;Dey, Rajarashi;Whelton, Andrew J. published 《Release of drinking water contaminants and odor impacts caused by green building cross-linked polyethylene (PEX) plumbing systems》. The research results were published in《Water Research》 in 2014.COA of Formula: C8H18O2 The article conveys some information:

Green buildings are increasingly being plumbed with crosslinked polyethylene (PEX) potable water pipe. Tap water quality was investigated at a six month old plumbing system and chem. and odor quality impacts of six PEX pipe brands were examined Eleven PEX related contaminants were found in the plumbing system; one regulated (toluene) and several unregulated: Antioxidant degradation products, resin solvents, initiator degradation products, or manufacturing aides. Water chem. and odor quality was monitored for new PEX-a, -b and -c pipes with (2 mg/L free chlorine) and without disinfectant over 30 days. Odor and total organic carbon (TOC) levels decreased for all pipes, but odor remained greater than the USA’s Environmental Protection Agency’s (USEPA) secondary maximum contaminant level. Odors were not attributed to known odorants ethyl-tert-Bu ether (ETBE) or methyl-tert-Bu ether (MTBE). Free chlorine caused odor levels for PEX-a1 pipe to increase from 26 to 75 threshold odor number (TON) on day 3 and affected the rate at which TOC changed for each brand over 30 days. As TOC decreased, the UV absorbance at 254 nm increased. Pipes consumed as much as 0.5 mg/L as Cl₂ during each 3 day stagnation period. Sixteen organic chems. were identified, including toluene, pyridine, methylene trichloroacetate and 2,4-di-tert-butylphenol. Some were also detected during the plumbing system field investigation. Six brands of PEX pipes sold in the USA and a PEX-a green building plumbing system impacted chem. and drinking water odor quality. To complete the study, the researchers used 2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) .

2,5-Dimethyl-2,5-hexanediol(cas:110-03-2) on heteropoly acid catalyzed dehydration yields cyclic ethers via stereospecific intramolecular SN2 mechanism. It reacts with nitriles in concentrated sulfuric acid to yield Δ1-pyrrolines.COA of Formula: C8H18O2

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Alcohol – Wikipedia,
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Mirzania, Foroogh;Sarrafi, Yaghoub;Farimani, Mahdi Moridi published 《Comparison of chemical composition, antifungal and antibacterial activities of two populations of Salvia macilenta Boiss. Essential Oil》. The research results were published in《Records of Natural Products》 in 2018.Electric Literature of C10H22O The article conveys some information:

Salvia macilenta Boiss. is a fragrant subshrub which grows wild in some regions of Iran. In this work, we contrasted essential oil contents and components of two wild populations under two different ecol. situations (Kerman and Baluchistan Provinces, Center and South East of Iran, resp.). For the first time the antibacterial and the antimycotic properties of these essential oils were also evaluated against seven bacterial and fungal strains. The essential oils were isolated by hydrodistillation method and the chem. compositions of the samples were examined by GC and GC-MS. Kerman (K) specimen was found to be rich in α-pinene (29.0%), p-cymene (10.7%), veridiflorol (9.1%), α-eudesmol (8.7%), bornyl acetate (7.3%) with lesser concentrations of borneol (4.9%). Principal components were identified as α-eudesmol (35.6%), α-pinene (7.7%), bornyl acetate (7.6%), (E)-nerolidol (6.5%) and veridiflorol (5.9%) from Baluchistan (B) sample. Oxygenated sesquiterpenes were found to be the principal class of components in the oil of Baluchistan sample (53.0%) whereas monoterpene hydrocarbons were the main class in Kerman specimen (46.6%). The results demonstrated that the variety in the volatile compounds could be considered as chemotaxonomic importance and it may be ascribed to their different ecol. and geog. source. And 3,7-Dimethyloctan-3-ol (cas: 78-69-3) was used in the research process.

3,7-Dimethyloctan-3-ol(cas:78-69-3) is a fatty alcohol that is 3-octanol substituted by methyl groups at positions 3 and 7.Electric Literature of C10H22O Metabolite observed in cancer metabolism. It has a role as a human metabolite.

Reference:
Alcohol – Wikipedia,
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COA of Formula: C8H18O2《Facile synthesis of macrocyclic tetrazoles by regioselective cycloalkylation of bistetrazoles with 2,5-dimethylhexane-2,5-diol in perchloric acid》 was published in 2012. The authors were Voitekhovich, Sergei V.;Lyakhov, Alexander S.;Ivashkevich, Ludmila S.;Gaponik, Pavel N., and the article was included in《Tetrahedron Letters》. The author mentioned the following in the article:

Alkylation of 1,5-bis(tetrazol-5-yl)-3-oxapentane with 2,5-dimethylhexane-2,5-diol in 65% aqueous perchloric acid was found to proceed selectively on the N2 atoms of both tetrazole rings generating a 15-membered macrocycle with tetrazol-2,5-diyl moieties incorporated (yield ca. 80%). Under analogous alkylation conditions 1,5-bis(1-methyltetrazol-5-yl)-3-oxapentane undergoes quaternization resulting in a macrocyclic tetrazolium perchlorate containing two 1-methyltetrazolium-3,5-diyl units linked by 3-oxapentane-1,5-diyl and 2,5-dimethylhexane-2,5-diyl bridges. Crystal structures of the macrocyclic compounds obtained, determined by single crystal X-ray anal., are described. To complete the study, the researchers used 2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) .

2,5-Dimethyl-2,5-hexanediol(cas:110-03-2) was used in the synthesis of six- and seven-membered heterocyclic boron compounds containing intramolecular N-B bond.COA of Formula: C8H18O2

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Su, Nana;Ye, Ziyang;Li, Jinglei;Yang, Liuqing;Hou, Guohua;Ye, Ming published 《Effect of the addition of roselle (Hibiscus sabdariffa L.) extracts on the rheological, textural, and antioxidant activity of fermented milks》. The research results were published in《Flavour and Fragrance Journal》 in 2020.Category: alcohols-buliding-blocks The article conveys some information:

The study aims to evaluate the rheol., textural, and antioxidant activity of fermented milks with the addition of roselle (Hibiscus sabdariffa L.) extracts at concentrations of 0.0, 0.1, 0.2, and 0.3% (CFM, RFM₁, RFM₂, and RFM₃). The chem. composition of the fermented milks, including crude protein, fat, ash, total solids and non-fat solids, were also determined Gas chromatog.-mass spectroscopy (GC-MS) detected 42, 46, 47, and 49 kinds of volatile flavor compounds in CFM, RFM₁, RFM₂, and RFM₃, resp. The antioxidant activity of fermented milks was measured using ferric reducing antioxidant power and scavenging capacities for 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radicals during 28 days of refrigerated storage. The results of this study are of great significance to improve the understanding and application of roselle extracts in the food industry. Both roselle and fermented milk are beneficial to human health, with many biol. activities, such as antioxidant, hypoglycemic, liver-protecting, and antihypertensive properties; however, no attention has been paid to the combined effects of roselle and fermented milks. The study created a novel fermented milk and the results indicate that 0.3% roselle extracts can play the most important role in affecting the rheol., textural properties, and antioxidant activity of fermented milks, so this modification of fermented milk shows promise for potential application in the food industry. To complete the study, the researchers used 2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) .

2,5-Dimethyl-2,5-hexanediol(cas:110-03-2) is used as an intermediate in the preparation of 2.5-Dimethyl-2.5-bis(tertbutyl-peroxy)hexane. It is also used in the synthesis of six- and seven-membered heterocyclic boron compounds.Category: alcohols-buliding-blocks

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North, Megan K.;Dalle Zotte, Antonella;Hoffman, Louwrens C. published 《The effects of dietary quercetin supplementation on the meat quality and volatile profile of rabbit meat during chilled storage》 in 2019. The article was appeared in 《Meat Science》. They have made some progress in their research.Application of 80-46-6 The article mentions the following:

Thirty-four New Zealand White rabbits of both sexes were fed a control or supplemented (2 g/kg quercetin dihydrate) diet from weaning until slaughter (13 wk). After post-mortem chilling, excised and minced Longissimus thoracis et lumborum muscles were stored at 3.2 °C under oxygen-permeable wrapping for 1, 3 or 5 days. Color, pH, lipid oxidation (TBARS), antioxidant capacity (FRAP), volatile profile (day 1 and 5) and microbial count (day 5) were determined Quercetin reduced alkane (day 5) and hexanal (day 1) concentrations, but otherwise had minimal antioxidant effect, and did not benefit microbial quality, and thus did not substantially improve the shelf-life. The sex effect was similarly limited. Overall, the pH increased and FRAP decreased during storage, but TBARS did not change and discoloration seemed delayed. The volatile profile was dominated by esters, alcs. and heterocyclic compounds, and while it changed during storage, lipid oxidation products did not increase as expected, suggesting that rabbit meat may have relatively active reducing mechanisms. The experimental procedure involved many compounds, such as 4-tert-Amylphenol (cas: 80-46-6) .

4-tert-acylphenol (cas:80-46-6) contains hydroxyl group.Some low molecular weight alcohols of industrial importance are produced by the addition of water to alkenes. Ethanol, isopropanol, 2-butanol, and tert-butanol are produced by this general method. Application of 80-46-6

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