Nanjing Well Chemical Co., Ltd. devotes itself to the research, development and production of bulk raw medicines including Cisatracurium besylate, Donepezil hydrochloride, Perindopril erbumine, and medical intermediates, etc. Our company is good at Friedel-Crafts reaction, Grignard reac- tion, oxidizing reaction, cyclization reaction, acylation reaction, condensation reaction, nitration reaction, sulfonation reaction, various kinds of catalytic hydrogenation reduction and reduc- ing reaction etc.list as follows: