2,4-Dithiouracil2001-93-6100 % similar 2-Thiouracil141-90-256 % similar 4-Thiouracil591-28-652 % similar 2-Mercapto-4-methylpyrimidine hydrochloride6959-66-650 % similar 2-Mercaptopyrimidine1450-85-745 % similar 4-(4-Chlorophenyl)-2(1H)-pyrimidinethione175203-08-445 % similar 2-Mercaptopyridine2637-34-540 % similar 2-Mercaptopyridine73018-10-740 % similar Trithiocyanuric acid638-16-435 % similar 3-Mercapto-5-phenyl-1,2,4-triazole3414-94-632 % similar 2-Thiothymine636-26-031 % similar Thiophenol108-98-530 % similar