3,3'-((3-(Acetylamino)-4-((4-nitrophenyl)azo)phenyl)imino)bis(propanoic acid), dimethyl ester 61355-92-8 68248-10-2 EINECS 262-732-9 Methyl N-(3-(acetylamino)-4-((4-nitrophenyl)azo)phenyl)-N-(3-methoxy-3-oxopropyl)-beta-alaninate beta-Alanine, N-(3-(acetylamino)-4-((4-nitrophenyl)azo)phenyl)-N-(3-methoxy-3-oxopropyl)-, methyl ester