59061-94-8 ACETIC ACID, ((3-CHLORO-4-NITROPHENYL)HYDRAZONO)CYANO-, ETHYL ESTER Cyanoglyoxylic acid ethyl ester 2-(3-chloro-4-nitrophenyl)hydrazone Glyoxylic acid, cyano-, ethyl ester, 2-(3-chloro-4-nitrophenyl)hydrazone