59062-20-3 ACETIC ACID, CYANO((3-NITROPHENYL)HYDRAZONO)-, 2-METHYLPROPYL ESTER Cyanoglyoxylic acid isobutyl ester 2-(m-nitrophenyl)hydrazone Glyoxylic acid, cyano-, isobutyl ester, 2-(m-nitrophenyl)hydrazone