Pyrido[3,4-d]pyrimidin-4(1H)-one,5,6,7,8-tetrahydro- (9CI); 5,6,7,8-Tetrahydro-3H-pyrido[3,4-d]pyrimidin-4-one;5,6,7,8-Tetrahydropyrido[3,4-d]pyrimidin-4(3H)-one
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