2H-1-Benzopyran-2-one, 7-amino-4-(trifluoromethyl)- 53518-15-3 7-Amino-4-(trifluoromethyl)-2H-chromen-2-one 7-Amino-4-(trifluoromethyl)coumarin AIDS-129219 AIDS129219 Coumarin 151 NSC337981