303051-81-2

8,8-dimethyl-2-sulfanyl-8,9-dihydro-6H-pyrano[3',4':5,6]pyrido[2,3-d]pyrimidin-4-ol 8,8-dimethyl-2-sulfanyl-3,6,8,9-tetrahydro-4H-pyrano[3',4':5,6]pyrido[2,3-d]pyrimidin-4-one 8,8-dimethyl-2-thioxo-1,2,3,6,8,9-hexahydro-4H-pyrano[3',4':5,6]pyrido[2,3-d]pyrimidin-4-one 4H-Pyrano[3',4':5,6]pyrido[2,3-d]pyrimidin-4-one, 1,2,3,6,8,9-hexahydro-8,8-dimethyl-2-thioxo-