Thioindigo

Also known as: Vat Red 41, C.I. 73300, C.I. Vat Red 41, C.I. Disperse Red 364, C.I. Solvent Red 242, Antinolo Red B, Ciba Pink B, Durindone Red B, Durindone Red BP, Fluorescent Red Dye, Helindon Red BB, Isothioindigo, Tetra Pink B, Thioindigo Red B, Thioindigo Red S, 2-(3-Oxobenzo[b]thien-2(3H)-ylidene)-benzo[b]thiophene-3(2H)-one, (2Z)-2-(3-oxo-1-benzothiophen-2-ylidene)-1-benzothiophen-3-one

Thioindigo (CAS 522-75-8) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C16H8O2S2 and a molecular weight of 296.36400 g/mol. Key properties include a boiling point of 409.2ºC at 760 mmHg, a density of 1.544 g/cm3 and a flash point of 177ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

522-75-8

Jingsj CID

J-1523552-6

Molecular Formula

C₁₆H₈O₂S₂

Molecular Weight

296.36400 g/mol

Category

Organic Compounds

Last updated

8/21/2026