3-Methylbutanal methylformylhydrazone 3-Methylbutylidene gyromitrin 57590-21-3 BRN 2349797 Butanal, 3-methyl-, N-formyl-N-methylhydrazone CCRIS 5329 FORMIC ACID, METHYL(3-METHYLBUTYLIDENE)HYDRAZIDE Hydrazinecarboxaldehyde, methyl(3-methylbutylidene)- (9CI) Methyl(3-methylbutylidene)hydrazinecarboxaldehyde N-Formyl-N-methylhydrazone 3-methylbutanal