2-Mercapto-4(3H)-quinazolinone13906-09-7100 % similar 6(5H)-Phenanthridinone1015-89-059 % similar Quinazolinone491-36-147 % similar 1,2,3-Benzotriazin-4(3H)-one90-16-447 % similar 2,3-Dihydro-1,4-phthalazinedione1445-69-841 % similar 2,4-Dihydroxyquinoline86-95-340 % similar 9-Chloroacridine1207-69-838 % similar 9-Methylacridine611-64-338 % similar 4,5-Diamino-6-hydroxy-2-mercaptopyrimidine1004-76-837 % similar 2H-1,3-Benzoxazine-2,4(3H)-dione2037-95-837 % similar 2-Thioxanthine2487-40-337 % similar 6-Phenyl-2-thiouracil36822-11-437 % similar 9-Phenylacridine602-56-236 % similar 2-Thiothymine636-26-036 % similar 1(2H)-Isoquinolinone491-30-535 % similar 4-(Trifluoromethyl)-2(1H)-quinolinone25199-84-235 % similar 2,4-Quinolinediol monosodium salt4510-76-335 % similar Benzo(C)cinnoline230-17-134 % similar 1(2H)-Phthalazinone119-39-134 % similar 2-Mercaptobenzoxazole2382-96-934 % similar