67-56-1
甲醇
+
197520-71-1
2,3,4-三氟-5-硝基苯甲酸
→
918321-24-1
methyl 2,3,4-trifluoro-5-nitrobenzoate
918321-18-3
methyl 2,4-diamino-3-fluoro-5-nitrobenzoate