6-amino-3-tert-butyl-4-(9-ethyl-9H-carbazol-3-yl)-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile

6-amino-3-tert-butyl-4-(9-ethyl-9H-carbazol-3-yl)-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile · CAS 626228-03-3