Month: January 2023

Cadmium stress alters the essential oil composition and the expression of genes involved in their synthesis in peppermint (Mentha piperita L.) was written by Azimychetabi, Zeynab;Sabokdast Nodehi, Manije;Karami Moghadam, Taraneh;Motesharezadeh, Babak. And the article was included in Industrial Crops and Products in 2021.Recommanded Product: Isopentyl 3-methylbutanoate This article mentions the following:

Cadmium (Cd) is one of the heavy metals whose presence in soil induces oxidative stress in plants. This investigation was conducted to determine the modifications in some biochem. traits of peppermint (Mentha piperita L.) under cadmium stress. Likewise, the expression of key genes involved in the biosynthesis of menthol and menthofuran, two significant components of peppermint’s essential oil, was measured. The expression of peppermint genes under cadmium stress was measured for the first time in this research. The chem. composition of its essential oil, that makes peppermint a valuable herb, was also analyzed to determine the content of the principal constituents. Menthol content dropped, and menthofuran and pulegone concentrations increased by augmenting Cd. Increasing Cd level in the soil was followed by a reduction in the expression of MR (menthone reductase) and PR (pulegone reductase) genes, while an increase in the expression of MFS (menthofuran synthase) was observed Assessment of differences in some biochem. traits was performed addnl. Malondialdehyde, hydrogen peroxide and proline contents dilated along with the antioxidant capacity. The total protein content decreased, while peppermint responded to Cd stress by increased activity of catalase, ascorbate peroxidase and polyphenol oxidase enzymes. In the experiment, the researchers used many compounds, for example, Isopentyl 3-methylbutanoate (cas: 659-70-1Recommanded Product: Isopentyl 3-methylbutanoate).

Isopentyl 3-methylbutanoate (cas: 659-70-1) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Recommanded Product: Isopentyl 3-methylbutanoate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Solid phase synthesis of oxazolidinones via a novel cyclization/cleavage reaction was written by Buchstaller, Hans-Peter. And the article was included in Tetrahedron in 1998.Recommanded Product: 16413-26-6 This article mentions the following:

The solid phase synthesis of oxazolidinones via a novel cyclization/cleavage reaction is described. Resin bound carbamates, which were obtained by reaction of Wang-resin with com. available isocyanates, were alkylated with glycidyl tosylate to the corresponding epoxides. Nucleophilic opening of the epoxides with pyrrolidine and subsequent cyclization leads to the title compounds in high yield and purity. In the experiment, the researchers used many compounds, for example, 3-Cyanophenylisocyanate (cas: 16413-26-6Recommanded Product: 16413-26-6).

3-Cyanophenylisocyanate (cas: 16413-26-6) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Recommanded Product: 16413-26-6

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Association between human olfactory performance and ability to detect single compounds in complex chemical mixtures. was written by Sollai, Giorgia;Tomassini Barbarossa, Iole;Usai, Paolo;Hummel, Thomas;Crnjar, Roberto. And the article was included in Physiology & Behavior in 2020.Application of 659-70-1 This article mentions the following:

In this research we studied the olfactory sensitivity to banana head-space as a complex odor mixture in a group of 53 subjects classified for their olfactory status, by means of the “Sniffin’ Sticks” extended test. Using the coupled Gas Chromatog.-Mass Spectrometry/ Olfactometry (GC-MS/O) technique, the single components of the banana flavor mixture were separated, identified and verbally evaluated by each subject. For each compound both the “odor type” (i.e., odor quality: fruity, floral, green, etc.) and “odor descriptor” (i.e., name used by subjects for odor identification) were reported, so that we could identify mols. that were defined as smelling of banana. The results show that: (a) the threshold olfactory performance is linearly correlated with the number of odor-active compounds (total or smelling of banana) for each subject; (b) the intensity reported by each subject during the sniffing of the pen containing the banana aroma in the identification test is pos. correlated both with its hedonic valence and the number of odor-active compounds smelling of banana. In conclusion, our findings show that human perception of single compounds is conditioned by the threshold olfactory performance of the subject and that his/her ability to detect single mol. components, which smell as the mixture, affects the intensity and hedonism for the complex aroma. In the experiment, the researchers used many compounds, for example, Isopentyl 3-methylbutanoate (cas: 659-70-1Application of 659-70-1).

Isopentyl 3-methylbutanoate (cas: 659-70-1) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Application of 659-70-1

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Copper-Catalyzed Enantioselective Friedel-Crafts Alkylation of Pyrrole with Isatins was written by Li, Chong;Guo, Fengfeng;Xu, Kun;Zhang, Sheng;Hu, Yanbin;Zha, Zhenggen;Wang, Zhiyong. And the article was included in Organic Letters in 2014.Related Products of 2199-49-7 This article mentions the following:

The highly enantioselective Friedel-Crafts alkylation of pyrrole with isatins catalyzed by the tridentate Schiff base/Cu catalyst was developed. Hexafluoroisopropanol (HFIP) was used as a crucial additive to improve the enantioselectivity. In the case of N-unprotected isatins, an innovative substrate slow-releasing strategy was applied by virtue of a Henry/retro-Henry reaction. In the experiment, the researchers used many compounds, for example, Ethyl 4-methyl-1H-pyrrole-3-carboxylate (cas: 2199-49-7Related Products of 2199-49-7).

Ethyl 4-methyl-1H-pyrrole-3-carboxylate (cas: 2199-49-7) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Related Products of 2199-49-7

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Design and synthesis of potent amido- and benzyl-substituted cis-3-amino-4-(2-cyanopyrrolidide)pyrrolidinyl DPP-IV inhibitors was written by Corbett, J. W.;Dirico, K.;Song, W.;Boscoe, B. P.;Doran, S. D.;Boyer, D.;Qiu, X.;Ammirati, M.;VanVolkenburg, M. A.;McPherson, R. K.;Parker, J. C.;Cox, E. D.. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2007.Electric Literature of C9H9FO2 This article mentions the following:

The cis-3-amino-4-(2-cyanopyrrolidide)-pyrrolidine template has been shown to afford low nanomolar inhibitors of human DPP-IV that exhibit a robust PK/PD profile. An X-ray co-crystal structure of I confirmed the proposed mode of binding. The potent single digit DPP-IV inhibitor II exhibited a preferred PK/PD profile in preclin. animal models and was selected for addnl. profiling. In the experiment, the researchers used many compounds, for example, Methyl 4-fluoro-3-methylbenzoate (cas: 180636-50-4Electric Literature of C9H9FO2).

Methyl 4-fluoro-3-methylbenzoate (cas: 180636-50-4) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Electric Literature of C9H9FO2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

2-(Arylmethyl)-3-substituted quinuclidines as selective α7 nicotinic receptor ligands was written by Mazurov, Anatoly;Klucik, Jozef;Miao, Lan;Phillips, Teresa Y.;Seamans, Angela;Schmitt, Jeffrey D.;Hauser, Terry A.;Johnson, Raymond T.;Miller, Craig. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2005.Application of 16413-26-6 This article mentions the following:

A series of 2-(arylmethyl)-3-substituted quinuclidines was developed as α7 neuronal nicotinic acetylcholine receptor (nAChR) agonists based on a putative pharmacophore model. The series is highly selective for the α7 over other nAChRs (e.g., the α4β2 of the CNS, and the muscle and ganglionic subtypes) and is functionally tunable at α7. One member of the series, (+)-N-(1-azabicyclo[2.2.2]oct-3-yl)benzo[b]furan-2-carboxamide, has potent agonistic activity for the α7 nAChR (EC₅₀ = 33 nM, I_max = 1.0), at concentrations below those that result in desensitization. In the experiment, the researchers used many compounds, for example, 3-Cyanophenylisocyanate (cas: 16413-26-6Application of 16413-26-6).

3-Cyanophenylisocyanate (cas: 16413-26-6) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Application of 16413-26-6

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Difference in chemical composition of supercritical methanolysis products between two lignites was written by Chen, Bo;Wei, Xian-Yong;Zong, Zhi-Min;Yang, Zhu-Sheng;Qing, Yu;Liu, Chang. And the article was included in Applied Energy in 2011.Electric Literature of C12H22O4 This article mentions the following:

Dehydrated Xilinhaote lignite (XL) and Huolinguole lignite (HL) were depolymerized in supercritical methanol at 310 °C and the resulting soluble reaction mixtures were analyzed with GC/MS. The results show that the GC/MS-detectable species can be classified into hydroxybenzenes (HBs), esters, ketones, alkanols, arenes, methoxybenzene, alkanes, alkenes, nitrogen-containing organic compounds, sulfur-containing organic compounds, aldehydes and other compounds However, the difference in the product yield from different coals is significant. The most abundant products are HBs from XL and esters from HL. In the experiment, the researchers used many compounds, for example, Dimethyl decanedioate (cas: 106-79-6Electric Literature of C12H22O4).

Dimethyl decanedioate (cas: 106-79-6) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Electric Literature of C12H22O4

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

The synthesis of sulforaphane analogues and their protection effect against cisplatin induced cytotoxicity in kidney cells was written by Kim, Taejung;Kim, Young-Joo;Han, Im-Ho;Lee, Dahae;Ham, Jungyeob;Kang, Ki Sung;Lee, Jae Wook. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2015.Quality Control of 4-Fluorobenzylisothiocyanate This article mentions the following:

A series of sulforaphane analogs e.g., I were synthesized with various amines by treatment of carbon disulfide followed by Boc₂O and DMAP. These synthesized sulforaphane analogs were tested on cisplatin treated cultured LLC-PK1 kidney cell line. Among these analogs, several compounds including I show a potent effect on kidney cell protection assay at the concentration of 2.5 μM. Further studies with compound I revealed that the kidney cell protection effect was related by inhibiting the apoptosis pathway through JNK-p53-caspase apoptotic cascade. Compound I may be considered as a promising candidate for the development of new kidney protective agent against drug induced acute kidney disease. In the experiment, the researchers used many compounds, for example, 4-Fluorobenzylisothiocyanate (cas: 2740-88-7Quality Control of 4-Fluorobenzylisothiocyanate).

4-Fluorobenzylisothiocyanate (cas: 2740-88-7) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Quality Control of 4-Fluorobenzylisothiocyanate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Morphology evolution and mechanical property enhancement of linear low-density polyethylene by adding disentangled ultrahigh molecular weight polyethylene was written by Zhang, Yu;Di, Yutao;Ye, Chunlin;Zhang, Letian;Tang, Xin;Shu, Baoqiang;Yan, Xiang;Li, Wei;Wang, Jingdai;Yang, Yongrong. And the article was included in Polymers for Advanced Technologies in 2022.Application of 6683-19-8 This article mentions the following:

Ultra-high mol. weight polyethylene (UHMWPE) and linear low-d. polyethylene (LLDPE) with different ratios were melt-blended in an internal mixer. Results of rheol. tests and SEM indicate that the blends are well miscible in the range of small addition amount of UHMWPE. The content of UHMWPE is suggested to be less than 5.0 wt%, to guarantee good compatibility of biphasic blends. Differential scanning calorimetry studies indicate that co-crystallization occurs between UHMWPE and LLDPE. The crystallinity increases with the increase of UHMWPE as a nucleating agent. As a result, an improvement in mech. properties is achieved. When the addition amount of UHMWPE is 5.0 wt%, the impact strength, breaking elongation, Young’s modulus, and tensile strength are significantly increased by 27%, 25%, 75%, and 21% resp. In the experiment, the researchers used many compounds, for example, 2,2-Bis(((3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl)oxy)methyl)propane-1,3-diyl bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate) (cas: 6683-19-8Application of 6683-19-8).

2,2-Bis(((3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl)oxy)methyl)propane-1,3-diyl bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate) (cas: 6683-19-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Application of 6683-19-8

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Enological properties of red wine produced from native Kosetevek grapes (Vitis vinifera L.) cultivated in Eastern Anatolia was written by Arpa Zemzemoglu, Tuba Eda;Darici, Merve;Cabaroglu, Turgut. And the article was included in European Food Research and Technology in 2021.SDS of cas: 15399-05-0 This article mentions the following:

The aim of this study was to determine the potential of red wine production from the Kosetevek grape variety (Vitis Vinifera L.) cultivated in Elazig province of Turkey and to define the characteristics of Kosetevek wines. To determine the grapes for wine production quality, the general composition, phenolic compounds, aroma compounds and sensory anal. of the wines were carried out. Aroma compounds were performed by solid-phase extraction (SPE) and then analyzed by gas chromatog. (GC) along with gas chromatog./mass spectrometry (GC/MS). Results showed that the red wines obtained from Kosetevek grapes consisted of 50 aroma compounds for 2014 vintages and 49 aroma compounds for 2015 vintages. Esters were the main components contributing to the Kosetevek wine aroma along with Et hydrogen succinate and ethyl-4-hydroxy butanoate. The amount of total phenolic compounds, total anthocyanin, and the tannin in Kosetevek wines were found to be between 3705.45 and 3015.63 mg/L, 554.25-502.35 mg/L, and 4.5-3.95 g/L at 2014-2015 vintages, resp. As to sensory evaluation, Kosetevek wines were characterized as a deep purple color, middle to high body, and rich in red fruit (cherries, plums), and dried fruit odors. This study has provided enol. properties and aroma characterization of Kosetevek wines. The results of the study showed that Kosetevek wines could be considered as an alternative to other wines obtained from native grape varieties of the region. In the experiment, the researchers used many compounds, for example, Ethyl 2-hydroxy-3-phenylpropanoate (cas: 15399-05-0SDS of cas: 15399-05-0).

Ethyl 2-hydroxy-3-phenylpropanoate (cas: 15399-05-0) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.SDS of cas: 15399-05-0

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics