2-Methoxyethyl N-(5-(acetylamino)-4-((2-bromo-4,6-dinitrophenyl)azo)-2-methoxyphenyl)-N-ethyl-beta-alaninate 42861-47-2 EINECS 255-972-0 N-Ethyl-N-(4-((2-bromo-4,6-dinitrophenyl)azo)-5-(acetylamino)-2-methoxyphenyl)-beta-alanine, 2-methoxyethyl ester beta-Alanine, N-(5-(acetylamino)-4-((2-bromo-4,6-dinitrophenyl)azo)-2-methoxyphenyl)-N-ethyl-, 2-methoxyethyl ester