Sigma-Aldrich
Iron
铁
L-Leucine β-naphthylamide
Lead
铅
Leu-Leu
Molybdenum
钼
N-Acetyl-DL-phenylalanine β-naphthyl ester
N-Glutaryl-L-phenylalanine p-nitroanilide
NG,NG′-Dimethyl-L-arginine di(p-hydroxyazobenzene-p′-sulfonate) salt
NG,NG ′-二甲基-L-精氨酸 二(对羟基偶氮苯对磺酸) 盐