0-15-00-00526 (Beilstein Handbook Reference) 59061-90-4 ACETIC ACID, CYANO((4-METHYLPHENYL)HYDRAZONO)-, METHYL ESTER BRN 0650698 Cyanoglyoxylic acid methyl ester 2-p-tolylhydrazone Glyoxylic acid, cyano-, methyl ester, 2-p-tolylhydrazone