6-hydroxy-1-(3-isopropoxypropyl)-4-methyl-2-oxo-5-[4-(phenylazo)phenylazo]-1,2-dihydro-3-pyridinecarbonitrile
6-Idrossi-1-(3-isopropossipropile)-4-metil-2-osso-5-[4-(fenilazo)fenilazo]-1,2-diidro-3-piridin carbonitrile