Guanine sulfate10333-92-3100 % similar Guanine73-40-578 % similar Guanine hydrochloride635-39-272 % similar 2,5,6-Triaminopyrimidin-4-ol sulfuric acid salt35011-47-350 % similar 2,5,6-Triamino-4-hydroxypyrimidine sulfate39267-74-850 % similar 6-O-Methylguanine20535-83-549 % similar Thioguanine154-42-749 % similar 8-Azaguanine134-58-743 % similar Pterin2236-60-443 % similar 8-Mercaptoguanine28128-40-742 % similar O6-Benzylguanine19916-73-540 % similar 4,5,6-Triaminopyrimidine sulfate49721-45-139 % similar 6,7-Dimethylpterin611-55-236 % similar Xanthine69-89-636 % similar Lomeguatrib192441-08-035 % similar Xanthopterin monohydrate5979-01-135 % similar 2-Thioxanthine2487-40-334 % similar Biopterin22150-76-134 % similar Adenine sulfate321-30-233 % similar 2-Amino-5,6-dimethyl-4(3H)-pyrimidinone3977-23-933 % similar