4,5-Dichloro-2-thiophenesulfonyl chloride

2,3-二氯-5-氯磺酰基噻吩

Also known as: 2,3-Dichlorothiophene-5-sulfonyl chloride, 2,3-Dichlorothiophene-5-sulphonyl chloride, 4,5-Dichlorothiophene-2-sulfonyl chloride, 2-Thiophenesulfonyl chloride, 4,5-dichloro-, MFCD00052092

4,5-Dichloro-2-thiophenesulfonyl chloride (CAS 126714-85-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4HCl3O2S2 and a molecular weight of 251.538 g/mol. It is also known as 2,3-Dichlorothiophene-5-sulfonyl chloride, 2,3-Dichlorothiophene-5-sulphonyl chloride and 4,5-Dichlorothiophene-2-sulfonyl chloride. Key properties include a melting point of 54-58 °C(lit.), a boiling point of 338.7±42.0 °C at 760 mmHg, a density of 1.8±0.1 g/cm3 and a flash point of 158.6±27.9 °C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

126714-85-0

Jingsj CID

J-1991286-6

Molecular Formula

C₄HCl₃O₂S₂

Chinese Name

2,3-二氯-5-氯磺酰基噻吩

Molecular Weight

251.538 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026