(Z)-5-Amino-4-cyano-alpha-((3,4-dihydroxyphenyl)methylene)-1H-pyrazole-3-acetonitrile 151013-48-8 1H-Pyrazole-3-acetonitrile, 5-amino-4-cyano-alpha-((3,4-dihydroxyphenyl)methylene)-, (Z)- AG 568 Tyrphostin AG 568