4-[[4-(aminoiminomethyl)phenyl]amino]-4-oxobutoanoic acid 、
3S-amino-4-(methoxymethylamino)-4-oxobutanoic acid 、
4-<<4-(aminoiminomethyl)phenyl>amino>-4-oxobutanoic acid 、
氯甲酸异丁酯 生成 3S-[[[[4-(aminoiminomethyl)phenyl]amino]-1,4-dioxobutyl]amino]-4-(methoxymethylamino)-4-oxobutanoic acid