1 J4J 2-[(2-nitrophenyl)sulfanyl]acetohydrazide 1.000 2 8MN 2-(4-chlorophenyl)sulfanylethanehydrazide 0.750 3 WBF 2-[(2-fluorophenyl)sulfanyl]acetohydrazide 0.750 4 U2Q 2-[(3-nitro-2-pyridyl)thio]acetic acid 0.706