CAS 14080-50-3 appears in our catalog under these names: Thieno[2,3-d]pyrimidin-4-ol, 97%, 1H,4H-Thieno[2,3-d]pyrimidin-4-one, 95%, Thieno[2,3-d]pyrimidin-4(3H)-one, 97%, 4-Hydroxythieno(2,3-d)pyrimidine, 4–Hydroxythieno(2,3–d)pyrimidine. Offered by: Combi-blocks, TRC, GLPBio, TCI, Ambeed. Available pack sizes: 10g, 1g, 5g, 25g, 100g, 2g, 500mg, 250mg.