Organic colors related to carcinogenic aromatic amine, especially the important intermediate 3,3' dichloroaniline of organic color are discussed in details.
Using ortho-bis(porpargyl alcohol) derivatives as starting materials, we employed sulfenyl or sulfinyl chloride under base condition to generate bis-allene intermediates.
It presented the synthetic methods as well as experiment results of brominated or chlorinated propyl antimonites and its intermediate propenyl anti-monite.
Nonnatural amino acid 3-(4-thiazolyl)-D,L-alanine hydrochloride and its four intermediates were synthesized, their structures were detenmined by IR,NMR,elementary analysis and melting point.
Pharmaceutical Intermediates species: Sodium Cyanate, Potassium Cyanate, Subsalt of Heat Treatment, the Main Ring of Promethazine Hydrochloride, Promethazine Hydrochloride Side Chain.
Description: Produces pharmaceutical products including doxopin hydrochloride, chlorprothixene and phenoxy benzamine and other intermediates. Company profile, and product and contact details.