N-[4-[(2-cyano-4-nitrophenyl)azo]phenyl]-N-methyl-2-(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)ethyl-β-alanine (CAS RN 170222-39-6) and
N-[4-[(2-cyano-4-nitrophényl)azo]phényl]-N-méthyl-2-(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)éthyl-β-alanine (CAS RN 170222-39-6) et