4-Benzoyl-3-n-butoxy-5-nitro-benzoesaeure 、
3-benzyloxy-4-(4'-methylbenzoyl)-5-nitrobenzoic acid 以5-amino-3-benzyloxy-4-(4'-methylbenzoyl)benzoic acid is obtained with a melting point of 182.5°-184° C.的产率得到5-amino-3-benzyloxy-4-(4'-methylbenzoyl)benzoic acid