4-甲基-2-([(4-甲基苯基)磺酰基]氨基)戊酸甲酯

亮氨酸脑啡肽

L-亮氨酸

benzyl (2S)-2-[[(2S)-1-methoxy-4-methyl-1-oxopentan-2-yl]carbamoyl]pyrrolidine-1-carboxylate

H-HIS-LEN-OH