4-benzoyl-3-benzyloxy-5-nitrobenzoic acid 、
5-Amino-4-benzoyl-3-(p-chlorbenzyloxy)-benzoesaeure 以5-amino-4-benzyl-3-(p-chlorobenzyloxy)benzoic acid is obtained with a melting point of 199°-200° C.的产率得到5-amino-4-benzyl-3-(p-chlorobenzyloxy)benzoic acid