4-Benzoyl-3-n-butoxy-5-nitro-benzoesaeure 、
3-n-butoxy-4-(4'-chlorobenzoyl)-5-nitrobenzoic acid 以5-amino-3-n-butoxy-4-(4'-chlorobenzoyl)benzoic acid is obtained with a melting point of 286°-287.5° C.的产率得到5-amino-3-n-butoxy-4-(4'-chlorobenzoyl)benzoic acid