thieno[2,3-d]pyrimidin-4-ol

ieno[2,3-d]pyriMidin-4(3H)one

3H-Thieno[2,3-d]pyrimidine-4-one

Thieno[2,3-d]pyrimidin-4(3H)-one

4-Hydroxythieno[2,3-d]pyrimidine, Thieno[2,3-d]pyrimidin-4(1H)-one