Acetone hydrazone5281-20-9100 % similar Acetohydrazide1068-57-142 % similar Acetone oxime127-06-033 % similar Propiohydrazide5818-15-532 % similar Isobutyrohydrazide3619-17-830 % similar 2,2-Dimethylpropanoic acid hydrazide42826-42-630 % similar Methyl carbazate6294-89-930 % similar