5,6-Dihydro-6-methyl-4H-thieno[2,3-b]thiopyran-4-one

5,6-二氢-6-甲基-4H-噻吩并[2,3-b]噻喃-4-酮

Also known as: 6-Methyl-5,6-dihydro-4H-thieno[2,3-b]thiopyran-4-one, 5,6-Dihydro-6-methyl-4-oxo-4H-thieno[2,3-b]thiopyran, 5,6-Dihydro-6-methylthieno[2,3-b]thiopyran-4-one, Dorzolamide impurity 39, 5,6-Dihydro-4H-6-methylthieno[2,3-b]thiopyran-4-one

5,6-Dihydro-6-methyl-4H-thieno[2,3-b]thiopyran-4-one (CAS 120279-85-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H8OS2 and a molecular weight of 184.27900 g/mol. It is also known as 6-Methyl-5,6-dihydro-4H-thieno[2,3-b]thiopyran-4-one, 5,6-Dihydro-6-methyl-4-oxo-4H-thieno[2,3-b]thiopyran and 5,6-Dihydro-6-methylthieno[2,3-b]thiopyran-4-one. Key properties include a boiling point of 307ºC, a density of 1.3 and a flash point of 140ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

120279-85-8

Jingsj CID

J-1343720-0

Molecular Formula

C₈H₈OS₂

Chinese Name

5,6-二氢-6-甲基-4H-噻吩并[2,3-b]噻喃-4-酮

Molecular Weight

184.27900 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026