Chemical Blogs

Effect of chlorambucil on potato subnormal germination and quality Abstract Pro-Xylane is a sugar-protein hybrid made from xylose with anti-aging activity, which can induce thebiosynthesis of glycosaminoglycans in the superficial epidermis of the skin, promote the regeneration of collagen, andis widely used in the cosmetics industry. In this paper, the preparation methods, biological activities and […]

The detection method of N-methylaniline Abstract In this study, a gas chromatography/mass spectrometry (GC/MS) method was developed for the detection of N-methylaniline in textile products. N-methylaniline is an amine substance for which there is currently no detection method. However, the currently promulgated and implemented safety performance testing methods, especially footwear testing, have testing requirements for

Effect of chlorambucil on potato subnormal germination and quality Abstract A external standard method for determination of illegal additives in gasoline by gas chromatography was developed，and methylal and N－methyl aniline were rapidly analyzed． results showed that，the calibration curves of illegal additives had the good linear relationship in the range of 0 ～ 4% ( V/V) .The recoveries

Effect of chlorambucil on potato subnormal germination and quality Abstract To investigate the effects of isopropyl N-（3-chlorophenyl）carbamate（CIPC）treatment on sprouting and quality preservation of potato tubers during sub-ambient temperature storage at 12 ℃， the Favorita potato cultivar was chosen as the test material， and changes in germination and nutritional quality of potato tubers sprayed with 0.3

Synthesis of N , N’-di-sec-butyl-p-phenylenediamine antioxidant Abstract N, N’-di-sec-buty l-p-phenylenediamine was synthesized using p-phenylenediamine, methyl ethyl ketone, and hydrogen as raw materials in the presence of Cu-Cr catalyst. The preparation conditions of the motivation and the effects of the reaction conditions, such as catalyst dosage, reacting temperature, pressure, and reaction time, on the yield of

Synthesis of Amines by Oxidative Coupling of Benzylamine over a Vanadium-Nitrogen Co-doped Porous Carbon Catalyst Abstract Synthesis of imine compounds via benzylamine oxidative coupling has become one of the most ideal methods due to its high atom economy and environmental friendliness. The key is to develop high performance non-noble metal-based heterogeneous catalysts. In this work,

Aniline and benzylamine are intermediates of chemical industry and precursor chemicals，re- spectively． The rapid on － site detection of them is of great significance in environmental detection and cracking down on precursor chemicals．

Synthesis of impurities in methotrexate Objective: To synthesize three major impurities in it API. Methods: The impurity E was synthesized by cyclization of p-acid,tetraaminopyrimidineThe impurity E was synthesized by cyclization, impurity D was synthesized by hydrolysis, and impurity C was obtained by hydrolysis of methotrexate. The structures of the three impurities were determined by hydrogen

Synthesis process of methotrexate Abstract methotrexate methotrexate(1), chemically known as N-(4-(((2,4-diamino-6-pyridinyl)methyl)methylamino)benzoyl)-L-glutamate is a widely used antitumor drug in the field of cancer chemotherapy.111 Especially after the clinical adoption of high-dose it therapy in the past 20 years and its approval by the U.S. FDA for the treatment of rheumatoid arthritis in 1988,3 the demand for

Production process and application of isopropanol Production process and application of isopropanol Abstract It is a widely used organic solvent and raw material. The manufacturing technology of isopropanol was introduced. The economics of acetone hydrogenation and propylene hydration were compared. The application prospect of isopropanol was also analyzed. It is    considered that the route of