2H-Purin-2-one,8-[[2-(diethylamino)ethyl]thio]-1,3,6,7-tetrahydro-1,3-dimethyl-6-thioxo-(9CI); Theophylline, 8-[[2-(diethylamino)ethyl]thio]-6-thio- (7CI,8CI); NSC99683
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