70729-65-6 EINECS 274-828-8 Methyl N-(3-(acetylamino)-4-((2,4-dinitrophenyl)azo)phenyl)-N-(3-methoxy-3-oxopropyl)-beta-alaninate N-(3-(Acetylamino)-4-((2,4-dinitrophenyl)azo)phenyl)-N-(2-(methoxycarbonyl)ethyl)-beta-alanine, methyl ester beta-Alanine, N-(3-(acetylamino)-4-((2,4-dinitrophenyl)azo)phenyl)-N-(3-methoxy-3-oxopropyl)-, methyl ester