(2-Quinoxalinylmethylene)hydrazinecarboxylic acid methyl ester 5-24-03-00423 (Beilstein Handbook Reference) 55456-55-8 BRN 0799004 Carbadox, deoxy- Desoxycarbadox Hydrazinecarboxylic acid, (2-quinoxalinylmethylene)-, methyl ester N,N'-Desoxycarbadox