HOOC-[CH2]2-CH(NH2)COOH (1), H2N-CH2-COOCH3 (2), CLH3N-CH2- COOH (3), H2N-[CH2]4-CH(NH2)COOH (4), HCOONH4 (5)
Câu 18: Cho các chất sau: HOOC-[CH
2
]
2
-CH(NH
2
)COOH (1), H
2
N-CH
2
-COOCH
3
(2), ClH
3
N-CH
2
-
COOH (3), H
2
N-[CH
2
]
4
-CH(NH
2
)COOH (4), HCOONH
4