5,6-Dihydro-4-hydroxy-6-methyl-4H-thieno[2,3-b]thiopyran-2-sulfonamide 7,7-dioxide

5,6-二氢-4-羟基-6-甲基-4H-噻吩并[2,3-b]噻喃-2-磺酰胺 7,7-二氧化物

Also known as: 4-Hydroxy-6-methyl-5,6-dihydro-4H-thieno[2,3-b]thiopyran-2-sulfonamide 7,7-dioxide, 4-hydroxy-6-methyl-7,7-dioxo-5,6-dihydro-4H-thieno[2,3-b]thiopyran-2-sulfonamide, 4H-Thieno[2,3-b]thiopyran-2-sulfonamide, 5,6-dihydro-4-hydroxy-6-methyl-, 7,7-dioxide, 5,6-Dihydro-4-hydroxy-6-methyl-4H-thieno[2,3-b]thiopyran-2-sulfonamide 7,7-Dioxide, 5,6-Dihydro-4-hydroxy-6-methyl-4H-thieno[2,3-b]thiopyran-2-sulfonamide 7,7-dioxide, Dorzolamide Impurity 11, Dorzolamide Impurity 8, Dorzolamide intermediate, INTERMEDIATE FOR DORZOLAMIDE

5,6-Dihydro-4-hydroxy-6-methyl-4H-thieno[2,3-b]thiopyran-2-sulfonamide 7,7-dioxide (CAS 120279-26-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H11NO5S3 and a molecular weight of 297.372 g/mol. It is also known as 4-Hydroxy-6-methyl-5,6-dihydro-4H-thieno[2,3-b]thiopyran-2-sulfonamide 7,7-dioxide, 4-hydroxy-6-methyl-7,7-dioxo-5,6-dihydro-4H-thieno[2,3-b]thiopyran-2-sulfonamide and 4H-Thieno[2,3-b]thiopyran-2-sulfonamide, 5,6-dihydro-4-hydroxy-6-methyl-, 7,7-dioxide. Key properties include a boiling point of 624.6±65.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 331.5±34.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

120279-26-7

Jingsj CID

J-1518079-1

Molecular Formula

C₈H₁₁NO₅S₃

Chinese Name

5,6-二氢-4-羟基-6-甲基-4H-噻吩并[2,3-b]噻喃-2-磺酰胺 7,7-二氧化物

Molecular Weight

297.372 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026