Tag: M.W:100-200

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 616-14-8, is researched, Molecular C5H11I, about Phenotype identification of tumor-associated macrophages in mice bearing lung carcinoma, the main research direction is phenotype macrophage lung carcinoma.COA of Formula: C5H11I.

Objective To identify the phenotype of tumor-associated macrophages (TAM) in mice bearing Lewis lung carcinoma (LLC). Methods LLC cells were planted in the dorsal necks of C57BL/6 mice s.c. The levels of Th1/Th2 cytokines in the transplantation tumors were tested by ELISA. Co-expression of CD68/macrophage mannose receptor (MMR) and CD68/inducible nitric oxide synthase (iNOS) of TAM was detected by double-labeled immunofluorescence staining. Phagocytic capacity of TAM was assessed by yeast phagocytosis assay. Results In the mice LLC transplantation tumors, Th2 cytokine shift was found in the microenvironment. The concentrations of IFN-γ and IL-12 were (2.19 ±> 0.34) ng/mL and (1635.92 ±> 754.86) ng/mL in transplantation tumors, lower than (5.49 ±> 1.04) ng/mL and (6161.48 ±>498.49) ng/mL in normal lung tissues (P <0.05). IL-4 and IL-10 were (29.31 ±> 14.47) ng/mL and (21.54 ±> 10.72) ng/mL in transplantation tumors, higher than (16.43 ±>6.31) ng/mL and (10.71 ±>2.02) ng/mL in normal lung tissues (P <0.05). The percentage of CD68/MMR(+) TAM in all the TAM was 69.7%-83.2%, while CD68/iNOS (+) was 16.8%-30.3%. The phagocytic rate and index of the transplantation tumors were (5.42 ±> 1.74)% and 0.08 ±>0.02, much lower than (23.63 ±> 5.81)% and 0.39 ±>0.14 in normal spleen tissues with statistical significance (P <0.01). Conclusion TAM in mice bearing LLC might be polarized to the alternative activation phenotype. I hope my short article helps more people learn about this compound(1-Iodo-2-methylbutane)COA of Formula: C5H11I. Apart from the compound(616-14-8), you can read my other articles to know other related compounds.

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Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 1-Iodo-2-methylbutane(SMILESS: CCC(CI)C,cas:616-14-8) is researched.Application of 17739-45-6. The article 《SPME-GC-MS analysis of volatile components in fruits of the frozen Ficus tikoua Bur.》 in relation to this compound, is published in Shipin Yanjiu Yu Kaifa. Let’s take a look at the latest research on this compound (cas:616-14-8).

This thesis developed an SPME-GC-MS method for the aroma components in Ficus tikoua Bur. fruit. At the same time, the solid-phase micro extraction conditions were optimized: extraction temperature was 50°C, the extraction time was 40 min, added 8 g of sodium chloride electrolyte solid extraction Frozen Ficus tikoua Bur. fruit was detected out of 152 kinds of volatile substances, substances detected in 99.03%of the total. The main aroma components were esters, accounting for 33.06%; alcs., accounting for 13.14%; alkanes, accounting for 13.18%; there ketones, aldehydes, acids and other substances. Higher levels of 10 kinds of aroma components were guaiacol (14.71%), cyclobutane carboxylic acid dodecyl ester (13.54%), n-tridecane (6.05%), 2-tridecanone (4.72%), cyclohexasiloxane (4.44%), cyclobutane carboxylic acid decyl ester (4.18%), Me nonyl ketone (3.62%), acetic acid (2.98%), cyclopentanecarboxylic acid thirteen ester (2.48%), 2-tetradecanol (2.31%) and so on.

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Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem

Safety of 1-Iodo-2-methylbutane. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 1-Iodo-2-methylbutane, is researched, Molecular C5H11I, CAS is 616-14-8, about Gas chromatographic identification of alkyl radicals formed in plasma radiofrequency discharges by using iodine as a scavenger.

Alkyl radicals formed in low-pressure radiofrequency plasmas were identified by gas chromatog. using I as a scavenger compound Iodine vapors, injected into the glowing plasma discharge, reacted with active radicals in the gas phase, yielding various saturated alkyl iodides, that were trapped by freezing in an organic solvent and analyzed on Apiezon L and Carbowax 20M columns. Analyses carried out at different temperatures permitted the retention times and indexes to be measured and the relative molar heats of solution to be calculated

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Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Optical rotation and atomic dimension for the four optically active 1-halo-2-methylbutanes》. Authors are Brauns, Dirk H..The article about the compound:1-Iodo-2-methylbutanecas:616-14-8,SMILESS:CCC(CI)C).Reference of 1-Iodo-2-methylbutane. Through the article, more information about this compound (cas:616-14-8) is conveyed.

cf. C. A. 25, 2977. Detailed directions are given for the preparation of pure 2-methyl-1-butanol (I) and its F, Cl, Br and I derivatives. The following properties are described: I b. 128°, b50 65.7°, d420 0.8193, nD20 1.4107, sp. rotation for λ 5892.5 A. -5.756, for 5461 A. -6.835, for 5850 A. -5.78. The last 3 values were taken at about 20°. The corresponding values for the derivatives are: for 1-fluoro-2-methylbutane 55.9°, -, 0.7906, 1.3576, -8.865, -10.477, -8.87; for 1-chloro-2-methylbutane 100.45°, 27.7°, 0.8857, 1.4124, +1.644, +1.847, +1.68; for 1-bromo-2-methylbutane 121.6°, 45.0°, 1.2234, 1.4451, +4.043, +4.707, +4.09; and for 1-iodo-2-methylbutane -, 66.5°, 1.5253, 1.4977, +5.685, +6.626, +5.71. The differences in mol. rotation (Cl-F), (Br-Cl) and (I-Br) have the ratio 41:18:21.6, which agrees with the ratio of the differences of the radii of the respective neutral atoms.

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Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 1-Iodo-2-methylbutane( cas:616-14-8 ) is researched.Name: 1-Iodo-2-methylbutane.Ling, Peng-Xiang; Fang, Sheng-Long; Yin, Xue-Song; Chen, Kai; Sun, Bo-Zheng; Shi, Bing-Feng published the article 《Palladium-Catalyzed Arylation of Unactivated γ-Methylene C(sp3)-H and δ-C-H Bonds with an Oxazoline-Carboxylate Auxiliary》 about this compound( cas:616-14-8 ) in Chemistry – A European Journal. Keywords: aryl substituted alkyl amine derivative preparation; oxazoline carboxamide preparation iodoarene arylation palladium catalyst; CH activation; arylation; directing groups; oxazolines; palladium. Let’s learn more about this compound (cas:616-14-8).

A palladium-catalyzed arylation of unactivated γ-methylene C(sp3)-H and remote δ-C-H bonds by using an oxazoline-carboxylate directing group has been developed. Arylation occurs with a broad substrate scope and high tolerance of functional groups (i.e., halogen, nitro, cyano, ether, trifluoromethyl, amine, and ester). The oxazoline-type auxiliary can be removed under acidic conditions.

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Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem

Safety of 1-Iodo-2-methylbutane. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 1-Iodo-2-methylbutane, is researched, Molecular C5H11I, CAS is 616-14-8, about Kinetics, products and mechanism of O(3P) atom reactions with alkyl iodides. Author is Barnes, Ian.

Alkyl halides are an important source of halogens in the atm. In the case of alkyl iodides, relative kinetic studies of their OH reactions in photoreactors are complicated by fast reactions with the O(3P) atoms generated by the photochem. OH radical sources. In the present study, the relative kinetic technique was applied in large and small photoreactors to measure rate coefficients for the reaction of O(3P) atoms with a series of alkyl iodides at room temperature and atm. pressure. The products formed in N2 were also investigated. Alkenes and HOI are the major products of the reactions and the alkene was quantified for the majority of the alkyl iodides studied.

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Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem

Product Details of 4531-54-8. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 1-Methyl-4-nitro-1H-imidazol-5-amine, is researched, Molecular C4H6N4O2, CAS is 4531-54-8, about Nitroimidazoles. VI. Partition coefficients and tautomerism of simple nitroimidazoles. Author is Suwinski, Jerzy; Salwinska, Ewa; Watras, Jan; Widel, Maria.

Octanol-water partition coefficients (P) were determined for 42 simple nitroimidazoles with Me, Cl, Br, MeO, NH2, and NO2 substituents. Correlation between log P and the substituent constants πX of Hansch and fX of Nys-Rekker was derived. For the N-methylated compounds, the average value of πN-CH3 was calculated to be -0.30. Significance of log P measurement in estimating the tautomeric equilibrium in 4(5)-nitroimidazoles is discussed in detail.

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Reference:
Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Optical rotation and atomic dimension》. Authors are Brauns, D. H..The article about the compound:1-Iodo-2-methylbutanecas:616-14-8,SMILESS:CCC(CI)C).Reference of 1-Iodo-2-methylbutane. Through the article, more information about this compound (cas:616-14-8) is conveyed.

The 1-F, 1-Cl, 1-Br and 1-I derivatives of 2-methylbutane have [M]D20 -799.1°, 179.1°, 610.1° and 1124.7°, resp. If the F derivative is classified with the other halogen derivatives, the values for the ratio Cl-F, Br-Cl and I-Br are 41:18.1:21.6 which agree well with the ratios of the resp. at. diameters.

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Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem

Computed Properties of C5H11I. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 1-Iodo-2-methylbutane, is researched, Molecular C5H11I, CAS is 616-14-8, about Palladium-Catalyzed Arylation of Unactivated γ-Methylene C(sp3)-H and δ-C-H Bonds with an Oxazoline-Carboxylate Auxiliary. Author is Ling, Peng-Xiang; Fang, Sheng-Long; Yin, Xue-Song; Chen, Kai; Sun, Bo-Zheng; Shi, Bing-Feng.

A palladium-catalyzed arylation of unactivated γ-methylene C(sp3)-H and remote δ-C-H bonds by using an oxazoline-carboxylate directing group has been developed. Arylation occurs with a broad substrate scope and high tolerance of functional groups (i.e., halogen, nitro, cyano, ether, trifluoromethyl, amine, and ester). The oxazoline-type auxiliary can be removed under acidic conditions.

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Reference:
Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 1-Methyl-4-nitro-1H-imidazol-5-amine, is researched, Molecular C4H6N4O2, CAS is 4531-54-8, about Solvatochromism of Heteroaromatic Compounds: XIV. 5-Amino-1-methyl-4-nitropyrazole and Its Analogs.Product Details of 4531-54-8.

The solvatochromism of H complexes of 5-amino-1-methyl-4-nitropyrazole and 2-nitroaniline derivatives in aprotic protophilic media was described on a quant. level with the aid of Kamlet-Taft empirical parameters. Specific solvation affects only one of the two long-wave bands, that corresponding to an electronic transition involving orbital electron d. transfer from the H-bound N atom. When such transfer does not occur, which is typical of the second transition, specific solvatochromic effect is either weak or absent.

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Reference:
Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem