Synonyms: [1]benzothieno[2,3-d]pyrimidin-4(1H)-one, 5,6,7,8-tetrahydro-2-methyl-;[1]Benzothieno[2,3-d]pyrimidin-4(3H)-one, 5,6,7,8-tetrahydro-2-methyl-;[1]Benzothieno[2,3-d]pyrimidin-4-ol, 5,6,7,8-tetrahydro-2-methyl-;2-Methyl-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidin-4(1H)-one;2-Methyl-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidin-4(3H)-one;2-Methyl-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidin-4-ol