CAS 2131803-90-0 appears in our catalog under these names: WYC-209/ 98.91% (existing batch purity), WYC-209, Ethyl 2-[2-(3,4-dihydro-4,4-dimethyl-1-oxido-2H-1-benzothiopyran-6-yl)ethynyl]-5-pyrimidinecarboxylate, WYC-209, 99.82%. Offered by: TargetMol, Biosynth, Chemat, MedChemExpress. Available pack sizes: 5mg, 10mg, 25mg, 50mg, 100mg, 1mg, 10 mg, 5 mg.