72922-60-2
methyl 3-amino-4-methyl-5-nitrobenzoate
→
54591-64-9
3-hydroxy-4-methyl-5-nitrobenzoic acid
49592-71-4
3,5-二硝基-4-甲基苯甲酸甲酯
16533-71-4
3,5-二硝基-4-甲基苯甲酸