Rose Bengal lactone

Also known as: 4,5,6,7-tetrachloro-2',4',5',7'-tetraiodofluorescein, 4,5,6,7-Tetrachloro-3',6'-dihydroxy-2',4',5',7'-tetraiodospiro[isobenzofuran-1(3H),9'-[9H]xanthene]-3-one, 2,4,5,7-Tetraiodo-3,6-dihydroxy-4',5',6',7'-tetrachlorospiro[9H-xanthene-9,1'(3'H)-isobenzofuran]-3'-one, Rose Bengal B, Solvent Red 141

Rose Bengal lactone (CAS 4159-77-7) is a compound in the Esters category listed in the Jingsj chemical database. It has the molecular formula C20H4Cl4I4O5 and a molecular weight of 973.67300 g/mol. Key properties include a melting point of 280ºC (dec.)(lit.), a boiling point of 741.8ºC at 760 mmHg, a density of 2.96g/cm3 and a flash point of 402.4ºC. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

4159-77-7

Jingsj CID

J-1143566-6

Molecular Formula

C₂₀H₄Cl₄I₄O₅

Molecular Weight

973.67300 g/mol

Category

Esters

Last updated

8/21/2026