Acetic acid 2-{(2-acetoxy-ethyl)-[4-(2,6-dicyano-4-nitro-phenylazo)-3-propionylamino-phenyl]-amino}-ethyl ester
Acetic acid 2-{(2-acetoxy-ethyl)-[4-(2-bromo-6-cyano-4-nitro-phenylazo)-3-propionylamino-phenyl]-amino}-ethyl ester
3-Propionylamido-N,N-bis(2-acetoxy-ethyl)-anilin