5-氨基-1-(2-羟乙基)吡唑

呋喃唑酮

2-[1,2-二(甲基磺酰基)肼基]乙基甲烷磺酸酯

2-(5-amino-4-nitrosopyrazol-1-yl)ethanol

2-(2-hydroxyethyl)-1H-pyridazine-3,6-dione