Product description:Light yellow flaky crystal. The melting point of 106-106 ℃, boiling point of 162 ℃.With the smell of coffee and Fried peanuts.Mainly used for preparation of chocolate, coffee, meat and nuts such as essence. Used in all kinds of food, processed products, essence.Used in synthesis of fluoroquinolone drugs spa effect.
Product description:Hygroscopicity of crystallization (benzene, petroleum ether, or sublimation). Melting point (92 ℃) 80, the boiling point of 130 ℃ and 2.4 kPa, soluble in water, soluble in ethanol. Ethyl ether; Chloroform; Carbon disulfide. Benzene. R melting point 92 ℃, [alpha] 50.7 ° (C = 2.05, H2O), S melting point 91 ℃, [alpha] + 50 ° (C = 2.00, H2O).
Product description:Clinical treatment of coronary heart disease, viral myocarditis, rheumatic heart disease, and a few digitalism with arrhythmia (most) for other drugs is invalid after application. General to various degree atrioventricular block has the obvious curative effect, basically after treatment, conduction block can disappear, also has the obvious curative effect for sick sinus atrial node syndrome, poor curative effect of bundle branch block.
Product description:Used in organic synthesis. Used as a pesticide stabilizers, diesel oil, antifreeze, etc. 2 - methyl - 2, 4 - butyl glycol has the permeability, has good dispersion ability on inorganic matter. Except as a solvent, it is used to dry cleaners, automobile brake oil, printing ink, pigment dispersant, wood preservative, etc.
Product description:Mainly used in the system of phthalic acid ester and aliphatic dibasic acid esters plasticizer such as phthalate dioctyl dioctyl ester, azelaic acid and sebacic acid dioctyl ester, etc., were used as a primary plasticizer and plastic hardy plasticizer, defoaming agent, dispersant, dressing agent and oil filling agent, also used in printing and dyeing, paint, film, etc.
Product description:This product is a white crystalline, it will turn yellow brown, m.p. 66 ~ 70 ℃, insoluble in water, soluble in toluene solvent, etc.Used as pharmaceutical intermediates for the production of sulfanilamide - 6 - a oxygen pyrimidine. Used in synthetic fungicides ether ester of intermediates.
Product description:White powder crystal or three oblique surface scaly shiny crystal, has a creamy feel, no smell. Soluble in water, alcohol, glycerin, ethers and essential oil, aqueous solution is a weak acid. Used for glass, optical glass, acid glass, heat-resistant glass, insulation glass fiber) industry, can improve the heat-resistant, transparent glass products performance, improve the mechanical strength, shorten the time of melt.
Product description:As production agger column, ringo, dean of the intermediate because of poor stability, generally use (R) - 3 - amino piperidine double hydrochloride to fit into the API; Another process is to use 3 - amino piperidine BOC for synthesis of benzoic acid, Glenn, both process route is feasible. The former step less in theory, but there is no protection, so the impurities removing relative suffering.