2H-Purin-2-one,1,3,6,7-tetrahydro-1,3-dimethyl-8-[(3-pyridinylmethyl)thio]-6-thioxo- (9CI);Theophylline, 8-[(3-pyridylmethyl)thio]-6-thio- (7CI,8CI); NSC 97999
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