Month: February 2023

An investigation by thermal analysis of glycosidic natural sweeteners was written by Santana, Naienne da S.;Mothe, Cheila G.;de Souza, Marcio Nele;Mothe, Michelle G.. And the article was included in Journal of Thermal Analysis and Calorimetry.Formula: C4H10O4 This article mentions the following:

The demand for non-nutritive sweeteners of natural origin has increased in recent years, mainly driven by health concerns and the quest for a healthier lifestyle. This work aimed to investigate the content of steviol glycosides from Stevia rebaudiana Bertoni and cucurbitane glycosides from monk fruit in com. samples of sweeteners using thermal anal. techniques (TG/DTG, DTA, and DSC), FTIR, EDS. Four com. samples were analyzed based on steviol glycosides (E, E2, E3, E4) and one sample based on cucurbitane glycosides (M1). The thermogravimetry (TG) results showed that the thermal stability order of the samples till 200 掳C was equal to E4 > M1 鈮?E2 > E > E3. Despite being marketed based on different natural glycosides, thermal anal. techniques showed similar thermal profiles between E2 and M1 samples. The DSC curves of these samples showed clear erythritol melting events, and the FTIR spectra confirmed the presence of this polyol in E2 and M1 samples. On the other hand, the DSC curve and the FTIR spectrum confirmed the presence of xylitol in the composition of the E4 sample. In the experiment, the researchers used many compounds, for example, (2R,3S)-rel-Butane-1,2,3,4-tetraol (cas: 149-32-6Formula: C4H10O4).

(2R,3S)-rel-Butane-1,2,3,4-tetraol (cas: 149-32-6) belongs to alcohols. Because alcohols are easily synthesized and easily transformed into other compounds, they serve as important intermediates in organic synthesis. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage. No further oxidation is seen except under very stringent conditions.Formula: C4H10O4

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Biochar and super absorbent polymer improved growth, yield, and phytochemical characteristics of Satureja rechingeri Jamzad in water-deficiency conditions was written by Beiranvandi, Mojgan;Akbari, Nasser;Ahmadi, Abdolreza;Mumivand, Hasan;Nazarian, Farhad. And the article was included in Industrial Crops and Products in 2022.Name: 5-Isopropyl-2-methylphenol This article mentions the following:

Biochar is a stable, carbon-rich byproduct of organic matter thermal degradation The application of biochar demonstrates improved soil properties, water holding capacity, crop plant growth, and nutrient retention. The purpose of this study was to determine the effect of biochar and super absorbent on several phytochem. parameters of S. rechingeri Jamzad when grown in a water-stressed conditions. During two consecutive cropping seasons (2017-2019), an experiment was conducted using a split-plot factorial design with a randomized complete block design in three replications. Irrigation (100%, 80%, and 60% of irrigation requirement) [I] was used in the main plots, while subplots received a combination of two levels of cow manure biochar (0 and 10 t ha-1) [B] and two levels of stockosorb super absorbent (0 and 60 mg per plant) [SA]. Despite the relatively high diversity of compounds found in savory essential oils, the mean comparison revealed that IxBxSA had a significant effect on the majority of the primary components found in savory essential oils. Carvacrol (67.2-85%) was the first major constituent of savory essential oils in the two years, followed by 1, 8-cineole, terpinen-4-ol, 纬-terpinene, and linalool. The exptl. results indicated that drought stress increased the percentage of essential oil in two years but decreased dry matter and essential oil yield. Evidently, biochar and SA alone exhibit a similar effect on the content of savory essential oils, increasing growth rate and essential oil content (%). In general, this study confirmed that the combination of biochar and SA resulted in the highest savory leaf area, dry weight, and essential oil yield when compared to the application of biochar or SA alone under drought stress conditions. In the experiment, the researchers used many compounds, for example, 5-Isopropyl-2-methylphenol (cas: 499-75-2Name: 5-Isopropyl-2-methylphenol).

5-Isopropyl-2-methylphenol (cas: 499-75-2) belongs to alcohols. A strong base can deprotonate an alcohol to yield an alkoxide ion (R鈥昈鈭?. For example, sodamide (NaNH2), a very strong base, abstracts the hydrogen atom of an alcohol. Converting an alcohol to an alkene requires removal of the hydroxyl group and a hydrogen atom on the neighbouring carbon atom. Dehydrations are most commonly carried out by warming the alcohol in the presence of a strong dehydrating acid, such as concentrated sulfuric acid.Name: 5-Isopropyl-2-methylphenol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Ospemifene for the treatment of menopausal vaginal dryness, a symptom of the genitourinary syndrome of menopause was written by Archer, David F.;Simon, James A.;Portman, David J.;Goldstein, Steven R.;Goldstein, Irwin. And the article was included in Expert Review of Endocrinology & Metabolism in 2019.SDS of cas: 128607-22-7 This article mentions the following:

: Vulvovaginal atrophy (VVA), a component of the genitourinary syndrome of menopause, is a progressive condition due to decline in estrogen leading to vaginal and vulvar epithelial changes. Accompanying symptoms of dryness, irritation, burning, dysuria, and/or dyspareunia have a neg. impact on quality of life. Ospemifene is a selective estrogen receptor modulator (SERM) approved by the FDA for moderate to severe dyspareunia and vaginal dryness due to postmenopausal VVA.: PubMed was searched from inception to March 2019 with keywords ospemifene and vulvar vaginal atrophy to review preclin. and clin. data describing the safety and efficacy of ospemifene for vaginal dryness and dyspareunia due to VVA. Covered topics include efficacy of ospemifene on vaginal cell populations, vaginal pH, and most bothersome VVA symptoms; imaging studies of vulvar and vaginal tissues; effects on sexual function; and safety of ospemifene on endometrium, cardiovascular system, and breast.: Ospemifene is significantly more effective than placebo in all efficacy analyses studied, working through estrogen receptors and possibly androgen receptors. Safety as assessed by adverse events was generally comparable to that with placebo and to other SERMs, and/or adverse events were not clin. meaningful. No cases of endometrial or breast cancer were reported. In the experiment, the researchers used many compounds, for example, (Z)-2-(4-(4-Chloro-1,2-diphenylbut-1-en-1-yl)phenoxy)ethan-1-ol (cas: 128607-22-7SDS of cas: 128607-22-7).

(Z)-2-(4-(4-Chloro-1,2-diphenylbut-1-en-1-yl)phenoxy)ethan-1-ol (cas: 128607-22-7) belongs to alcohols. Because alcohols are easily synthesized and easily transformed into other compounds, they serve as important intermediates in organic synthesis. Grignard and organolithium reagents are powerful tools for organic synthesis, and the most common products of their reactions are alcohols.SDS of cas: 128607-22-7

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Unsymmetrical Diborane(4) Derivatives: A Comparative Study was written by Borner, Corinna;Wiecha, Maximilian T.;Kleeberg, Christian. And the article was included in European Journal of Inorganic Chemistry in 2017.HPLC of Formula: 1214264-88-6 This article mentions the following:

Since its introduction in 2010 by Suginome et al., pinB-Bdan [pin = OCMe₂CMe₂O, dan = (NH)₂(C₁₀H₆)] has become a valuable reagent in various regioselective (bis)borylation reactions, and related unsym. diborane(4) derivatives were used as versatile precursors for diaminoboryl complexes. However, the unsym. diborane(4) derivatives employed show little variation of the diol and diamine moieties. The present study expands this class of compounds and reports the synthesis of unsym. diborane(4) derivatives [C₂H₄(tBuN)₂]B-B(NMe₂)₂ and [C₂H₄(tBuN)₂]B-B(NMe₂)Cl, bearing a sterically demanding nonaromatic diamine moiety, as well as [C₆H₄(HN)₂]B-B(O₂C₅H₁₀), [C₆H₄(HN)₂]B-B(O₂C₂H₄), and [C₆H₄(HN)₂]B-B[O₂C₆H₂(C₂H₉)₂], which illustrate the variability of the diol moiety. Fully characterization of all compounds including single-crystal x-ray diffraction studies allows for the 1st time a comparative discussion of the spectroscopic and structural properties of this class of compounds In the experiment, the researchers used many compounds, for example, 2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-1H-naphtho[1,8-de][1,3,2]diazaborinine (cas: 1214264-88-6HPLC of Formula: 1214264-88-6).

2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-1H-naphtho[1,8-de][1,3,2]diazaborinine (cas: 1214264-88-6) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. Under carefully controlled conditions, simple alcohols can undergo intermolecular dehydration to give ethers. This reaction is effective only with methanol, ethanol, and other simple primary alcohols.HPLC of Formula: 1214264-88-6

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Creation of a Nonsymmetric Dimethanolpyridine Ligand: A Rare Zn(salphen) Template Effect was written by Escudero-Adan, Eduardo C.;Benet-Buchholz, Jordi;Kleij, Arjan W.. And the article was included in Inorganic Chemistry in 2008.HPLC of Formula: 1122-71-0 This article mentions the following:

An interesting reversible, templated synthesis of unsym. pyridine-ligated Zn complexes was observed in solution and solid-state phases when Zn(salphen) complexes are reacted with MeOH-substituted pyridine substrates. The x-ray mol. structure of an unusual Zn₃ supramol. assembly is reported, in which the central Zn atom is embedded in a distorted octahedral geometry and each of the single anionic O atoms of the pyridine groups coordinates to a Zn(salphen) unit. In the experiment, the researchers used many compounds, for example, 6-Methyl-2-pyridinemethanol (cas: 1122-71-0HPLC of Formula: 1122-71-0).

6-Methyl-2-pyridinemethanol (cas: 1122-71-0) belongs to alcohols. Alcohols are among the most common organic compounds. They are used as sweeteners and in making perfumes, are valuable intermediates in the synthesis of other compounds, and are among the most abundantly produced organic chemicals in industry. A multistep synthesis may use Grignard-like reactions to form an alcohol with the desired carbon structure, followed by reactions to convert the hydroxyl group of the alcohol to the desired functionality.HPLC of Formula: 1122-71-0

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Preparation of Natural Rubber Composites with High Silica Contents Using a Wet Mixing Process was written by Phumnok, Ekaroek;Khongprom, Parinya;Ratanawilai, Sukritthira. And the article was included in ACS Omega in 2022.Application of 111-46-6 This article mentions the following:

A wet mixing process is proposed for filled rubber composites with a high silica loading to overcome the drawbacks of high energy consumption and workplace contamination of the conventional dry mixing process. Ball milling was adopted for preparing the silica dispersion because it has a simple structure, is easy to operate, and is a low-cost process that can be easily scaled up for industrial production The response surface methodol. was used to optimize the making of the silica dispersion. The optimum conditions for a well-dispersed silica suspension with the smallest silica particle size of 4.9 mm were an about 22% silica content and 62 h of ball milling. The effects of dry and wet mixing methods on the properties of silica-filled rubber composites were investigated in a broad range of silica levels from low to high loadings. The mixing method choice had little impact on the properties of rubber composites with low silica loadings. The silica-filled rubber demonstrated in this study, however, shows superior characteristics over the rubber composite prepared with conventional dry mixing, particularly with high silica loadings. When compared to silica-filled natural rubbers prepared by dry mixing (dry silica rubber, DSR), the wet mixing (for WSR) produced smaller silica aggregates with better dispersion. Due to the shorter heat history, the WSR exhibits superior curing characteristics such as a longer scorch time (2.2-3.3 min for WSR and 1.0-2.1 min for DSR) and curing time (4.1-4.5 min for WSR and 2.2-3.1 min for DSR). Addnl., the WSR has superior mech. properties (hardness, modulus, tensile strength, and especially the elongation at break (420-680% for WSR and 360-620% DSR)) over the DSR. The rolling resistance of WSR is lower than that of DSR. However, the reversed trend on the wet skid resistance is observed In the experiment, the researchers used many compounds, for example, 2,2′-Oxybis(ethan-1-ol) (cas: 111-46-6Application of 111-46-6).

2,2′-Oxybis(ethan-1-ol) (cas: 111-46-6) belongs to alcohols. Because alcohols are easily synthesized and easily transformed into other compounds, they serve as important intermediates in organic synthesis. Tertiary alcohols cannot be oxidized at all without breaking carbon-carbon bonds, whereas primary alcohols can be oxidized to aldehydes or further oxidized to carboxylic acids.Application of 111-46-6

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

An enantioselective potentiometric sensor for 2-amino-1-butanol based on chiral porous organic cage CC3-R was written by Wang, Bang-Jin;Duan, Ai-Hong;Zhang, Jun-Hui;Xie, Sheng-Ming;Cao, Qiu-E.;Yuan, Li-Ming. And the article was included in Molecules in 2019.Synthetic Route of C4H11NO This article mentions the following:

Porous organic cages (POCs) have attracted extensive attention due to their unique structures and tremendous application potential in numerous areas. In this study, an enantioselective potentiometric sensor composed of a polyvinyl chloride (PVC) membrane electrode modified with CC3-R POC material was used for the recognition of enantiomers of 2-amino-1-butanol. After optimization, the developed sensor exhibited enantioselectivity toward S-2-amino-1-butanol (log KPotS,R = -0.98) with acceptable sensitivity, and a near-Nernstian response of 25.8 卤 0.3 mV/decade within a pH range of 6.0-9.0. In the experiment, the researchers used many compounds, for example, (R)-2-Aminobutan-1-ol (cas: 5856-63-3Synthetic Route of C4H11NO).

(R)-2-Aminobutan-1-ol (cas: 5856-63-3) belongs to alcohols. Alcohols are among the most common organic compounds. They are used as sweeteners and in making perfumes, are valuable intermediates in the synthesis of other compounds, and are among the most abundantly produced organic chemicals in industry. The most common reactions of alcohols can be classified as oxidation, dehydration, substitution, esterification, and reactions of alkoxides.Synthetic Route of C4H11NO

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

The synthesis of soluble and volatile bioactive compounds by selected brewer鈥瞫 yeasts: Antagonistic effect against enteropathogenic bacteria and food spoiler – toxigenic Aspergillus sp. was written by Sampaolesi, Sofia;Briand, Laura E.;De Antoni, Graciela;Leon Pelaez, Angela. And the article was included in Food Chemistry: X in 2022.Synthetic Route of C4H10O4 This article mentions the following:

Contamination by Aspergillus sp. and the accumulation of its mycotoxins in food and beverages have a high impact on human health and food safety. This investigation inquires the ability of brewer鈥瞫 yeasts discarded after fermentation (brewing fermentation residue, BFR) to synthesize bioactive compounds and to biocontrol Aspergillus sp. BFRs of Saccharomyces cerevisiae MBELGA62 and Pichia kudriavzevii MBELGA61 proved to have bacteriostatic properties and to be efficient in fungal growth reduction, decreasing the growth rate of Aspergillus flavus and Aspergillus parasiticus up to 37.8% and 42.5%, resp. Fungal mycelium degradation along with absentia of conidia was detected near the yeast inoculum. Moreover, the yeasts synthesize volatile bioactive compounds that extend Aspergillus sp. lag phase above 100% and decrease fungal growth rates from 20% towards 44%, along with the complete inhibition of conidia synthesis. These results indicate the potential of this residue to be used in biocontrol applications in the food industry. In the experiment, the researchers used many compounds, for example, (2R,3S)-rel-Butane-1,2,3,4-tetraol (cas: 149-32-6Synthetic Route of C4H10O4).

(2R,3S)-rel-Butane-1,2,3,4-tetraol (cas: 149-32-6) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. Tertiary alcohols cannot be oxidized at all without breaking carbon-carbon bonds, whereas primary alcohols can be oxidized to aldehydes or further oxidized to carboxylic acids.Synthetic Route of C4H10O4

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Transfer of hydrosulfide from thiols to iron(II): a convenient synthetic route to nonheme diiron(II)-hydrosulfide complexes was written by Pal, Nabhendu;Majumdar, Amit. And the article was included in Dalton Transactions in 2019.Recommanded Product: 29364-29-2 This article mentions the following:

While the attempted synthesis of diiron(II)-hydrosulfide complexes using HS^– produced an insoluble precipitate, the reaction of Fe(BF₄)₂路6H₂O, Et₃N and HN-Et-HPTB with RSH (R = ^tBu, CH₂Ph) yielded the desired complex, [Fe₂(N-Et-HPTB)(SH)(H₂O)](BF₄)₂ (1a). The synthesis, one electron oxidation and dioxygen activity of 1a in comparison with an analogous chloride complex, [Fe₂(N-Et-HPTB)(Cl)(DMF)₂](BF₄)₂ (2), are described. In the experiment, the researchers used many compounds, for example, Sodium 2-methyl-2-propanethiolate (cas: 29364-29-2Recommanded Product: 29364-29-2).

Sodium 2-methyl-2-propanethiolate (cas: 29364-29-2) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. Tertiary alcohols cannot be oxidized at all without breaking carbon-carbon bonds, whereas primary alcohols can be oxidized to aldehydes or further oxidized to carboxylic acids.Recommanded Product: 29364-29-2

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts