Tyrphostin AG 490. An EGFR inhibitor, Synonyms: 2-Cyano-3-(3,4-dihydroxyphenyl)-N-(benzyl)-2-propenamide; 2-Cyano-3-(3,4-dihydroxyphenyl)-N-(phenylmethyl)-2-propenamide, AG 490, CAS Number: 133550-30-8, Purity: G99%, Molecular Formula: C1GH1GN2OG, 5mg.