59061-91-5 ACETIC ACID, ((4-CHLOROPHENYL)HYDRAZONO)CYANO-, METHYL ESTER BRN 0654416 Cyanoglyoxylic acid methyl ester 2-(p-chlorophenyl)hydrazone Glyoxylic acid, cyano-, methyl ester, 2-(p-chlorophenyl)hydrazone