2-methyl-5,6-dihydro-4H-cyclopenta[d][1,2]thiazol-3-one

5,6-二氢-2-甲基-2H-环戊并[D]异噻唑-3(4H)-酮

Also known as: 2-methyl-4,5-trimethylene-4-isothiazolin-3-one, 2-methyl-4,5-trimethylene isothiazolin-3-one, 2-methyl-4,5-trimethylene-3-isothiazolone, 2-methyl-5,6-dihydro-2H-cyclopenta[d]isothiazol-3(4H)-one, 4,5-trimethylene-2-methylisothiazolin-3-one, 5,6-dihydro-2-methyl-2H-cyclopent[d]isothiazol-3(4H)-one, 2,3,5,6-tetrahydro-2-methyl-2H-cyclopenta[d]-1,2-thiazol-3-one, PROMEXALX50PRESERVATIVE, Promexal

2-methyl-5,6-dihydro-4H-cyclopenta[d][1,2]thiazol-3-one (CAS 82633-79-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H9NOS and a molecular weight of 155.21700 g/mol. It is also known as 2-methyl-4,5-trimethylene-4-isothiazolin-3-one, 2-methyl-4,5-trimethylene isothiazolin-3-one and 2-methyl-4,5-trimethylene-3-isothiazolone. Key properties include a boiling point of 268.7ºC at 760 mmHg, a density of 1.31g/cm3 and a flash point of 116.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

82633-79-2

Jingsj CID

J-1086801-4

Molecular Formula

C₇H₉NOS

Chinese Name

5,6-二氢-2-甲基-2H-环戊并[D]异噻唑-3(4H)-酮

Molecular Weight

155.21700 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026