Synthesis of ephedrine by H 2 tissue objectivist

摘要

It refers to the powder composition, including: (a) a kind of opposite cube of parathion H2, such as ranitidine, cimetidine, nisidine and fentidine; (b) a kind of anhydrides solidified under environmental conditions; (c) an alkaline substance, which reacts with anhydrides in water to form carbon dioxide. The composition is characterized by no acidic hydroxyl group and acid hydroxyl group: acid adipiceae, acid suinic, acid smoking, anhydrous suinic