3-Methyladenine5142-23-4100 % similar N1-Methyladenine5142-22-349 % similar 9-Methyladenine700-00-549 % similar 7-Methyladenine935-69-349 % similar Adenine73-24-536 % similar 2-Chloroadenine1839-18-533 % similar Adenine hydrochloride2922-28-333 % similar