2-amino-4-(4-ethoxyphenyl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile5282-72-4DTXSID50385591RefChem:255500DTXCID00336614314767-26-52-amino-4-(4-ethoxyphenyl)-7,7-dimethyl-5-oxo-6,8-dihydro-4H-chromene-3-carbonitrileMFCD00245015Cambridge id 52827242-Amino-4-(4-ethoxyphenyl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H-1-benzopyran-3-carbonitrilePMA76726CCG-15785