2,3-Dichlorothiophene-5-sulfonamide

Also known as: 4,5-Dichloro-2-thiophenesulfonamide, 2,3-Dichlorothiophene-5-sulfomide, 2,3-Dichloro thiophene-5-sulfonamide, 2,3-Dichlorothiophene-5-sulfonamide, 97.5%, 2,3-Dichlorthiophen-5-sulfamid, 2-Thiophenesulfonamide, 4,5-dichloro-, 4,5-DICHLORO-2-THIOPHENESULFONAMIDE, 4,5-Dichlor-thiophen-2-sulfonsaeure-amid, 4,5-Dichlorothiophene-2-sulfonamide, 4,5-dichloro-thiophene-2-sulfonic acid amide, 4,5-dichlorothiophene-2-sulfonamide, MFCD00177161, T5SJ BG CG ESZW

2,3-Dichlorothiophene-5-sulfonamide (CAS 256353-34-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H3Cl2NO2S2 and a molecular weight of 232.108 g/mol. Key properties include a melting point of 152-155ºC, a boiling point of 405.3±55.0 °C at 760 mmHg, a density of 1.8±0.1 g/cm3 and a flash point of 198.9±31.5 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

256353-34-1

Jingsj CID

J-1013126-7

Molecular Formula

C₄H₃Cl₂NO₂S₂

Molecular Weight

232.108 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026