2-(6-Imino-3-methyl-1-(phenylacetyl)-1,4,6,7-tetrahydropyrazolo[3,4-d][1,3]thiazin-4-yl)-1-naphthol AIDS-141503 AIDS141503 NSC657381 {4H-Pyrazolo[3,4-d][1,3]thiazin-6-amine,} 3-methyl 4-(1-hydroxy-2-naphthalenyl)-1-(phenylacetyl)-