Autor: Acy Su

1. 1, 4-butanediol is widely used. In the United States and Western Europe, more than half is used to produce tetrahydrofuran, followed by γ-butyrolactone and polyethylene terephthalate, a rapidly developing engineering plastic; 1, 4-butanediol is used as a chain enhancer and polyester raw material to produce polyurethane elastomers and soft polyurethane foams; The esters obtained…

Methyl piperonyl epoxide propionate can be used as organic synthesis intermediates and pharmaceutical intermediates, mainly used in laboratory research and development process and pharmaceutical chemical production process.

Intermediates in organic synthesis. Production method: The anhydrous ethanol, which is co-steamed with diethyl phthalate and sodium metal, is added to the mixture of diethyl malonate, carbon tetrachloride and magnesium. The reaction is heated to start, and the temperature is controlled to smooth the reaction. Chemicalbook is then added with anhydrous ether, heated for 1h,…

1. 2-methyl-3-phenyl epoxy-ethane-2-carboxylic acid can be used as organic synthesis intermediates and pharmaceutical intermediates, mainly used in laboratory research and development process and pharmaceutical chemical production process.

Dihydroxyacetone is a naturally occurring ketose that is biodegradable, edible, and non-toxic to humans and the environment. It is a multifunctional additive that can be used in the cosmetics, pharmaceutical and food industries. dihydroxyacetone (DHA), chemically known as 1, 3-dihydroxy-2-acetone, is a commonly used ingredient in cosmetics for skin moisturizing, self-tanning and hair coloring. At…

1. N-methylbenzoyl methyl ester methyl ester amine is a light yellow or white solid with a cauterization point of 74°C and is an important pesticide intermediate. Bioactive N – MethylbenChemicalbookzamide is an effective phosphodiesterase (PDE10A) 10 a inhibitors. N-Methylbenzamide has anticancer activity.

1. 1-BOC-4-(4-fluorophenylamino) -piperidine is a heterocyclic derivative and can be used as a pharmaceutical intermediate.

1. P-methylphenylacetone is a chemical used in electrocarboxylation reactions. Application p-methylphenylacetone is an intermediate of Naomaining drugs, which can be used as an organic synthesis intermediate and pharmaceutical intermediate, and is mainly used in laboratory research and development process and chemical production process.

1. Tetracaine hydrochloride is a highly effective local anesthetic that can reversibly block nerve function. It is clinically used in infiltration anesthesia, nerve block anesthesia, epidural anesthesia, etc. Compared with procaine, its local anesthetic effect is significant and has been widely used in clinical practice. The synthesis of p-butylamobenzoic acid is a key step in…

White crystal, odorless, taste slightly bitter and numb. "It is highly soluble in water, ethanol and organic solvents, but not in diethyl ether." The aqueous solution does not decompose in the case of acid and alkali, and it rarely deteriorates after repeated autoclaving.Lidocaine hydrochloride has the characteristics of strong penetration, strong dispersion and rapid onset…