CAS 2309-49-1 appears in our catalog under these names: Tetramethyluric Acid, >95% (HPLC), Theacrine, Theacrine, 98.00%, Tetramethyluric acid 97%, 1,3,7,9-Tetramethyl-1H-purine-2,6,8(3H,7H,9H)-trione, 97%, 97%. Offered by: TRC, GLPBio, Chemat, Ambeed, MedChemExpress. Available pack sizes: 100mg, 1g, 5g, 25mg, 25g, 250mg, 100g, 25 g.