CAS 296262-16-3 appears in our catalog under these names: (5,6-Dimethyl-thieno[2,3-d]pyrimidin-4-ylsulfanyl)-acetic acid, 95%, ((5,6-Dimethylthieno(2,3-d)pyrimidin-4-yl)thio)acetic acid. Offered by: Combi-blocks, Biosynth. Available pack sizes: 100mg, 1g, 250mg, 50mg, 0,5g.