1-Isonicotinoyl-3-methyl-4-(4-methylphenyl)-4,7-dihydropyrazolo[3,4-d][1,3]thiazin-6(1H)-imine AIDS-141760 AIDS141760 NSC657987 {4H-Pyrazolo[3,4-d][1,3]thiazin-6amine,} 3-methyl- {4-(4-methylphenyl)-1-[(4-pyridinyl)carbonyl]-}