1-n-Butyl-2-(5-methyl-3-isoxazolylcarbonyl)hydrazine 101670-69-3 3-ISOXAZOLECARBOXYLIC ACID, 5-METHYL-, 2-BUTYLHYDRAZIDE 5-Methyl-3-isoxazolecarboxylic acid 2-butylhydrazide BRN 0780041