Synonyms: BRN 5547954;4-Oxo-5-methylthieno(2,3-d)pyrimidine-6-acetic acid;3,4-Dihydro-5-methyl-4-oxothieno(2,3-d)pyrimidine-6-acetic acid;Thieno(2,3-d)pyrimidine-6-acetic acid, 3,4-dihydro-5-methyl-4-oxo-;AC1MI8GG;Oprea1_346408;LS-152495;2-(5-methyl-4-oxo-3H-thieno[2,3-d]pyrimidin-6-yl)acetic acid;105523-01-1