methyl 2-cyano-3-(4-nitrophenyl)prop-2-enoate

2-氨基-3-甲氧羰基-5-硝基噻酚

3-氧代丙烯腈

methyl 2-cyanopent-4-enoate

2-氨基-4-甲基噻吩-3-羧酸甲酯