4-Benzoyl-3-hydroxy-5-nitro-benzoesaeure 、
4-(4'-Chlorbenzoyl)-3-hydroxy-5-nitro-benzoesaeure 以ethyl 4-(4'-chlorobenzoyl)-3-hydroxy-5-nitrobenzoate is obtained with a melting point of 188°-191.5° C.的产率得到ethyl 4-(4'-chlorobenzoyl)-3-hydroxy-5-nitrobenzoate