2',7'-Dichloro-3',6'-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-5-carboxylic acid

2',7'-二氯-3',6'-二羟基-3-氧代-3H-螺[异苯并呋喃-1,9'-氧杂蒽]-5-羧酸

Also known as: 5-Carboxy-2',7'-dichlorofluorescein, 5-Carboxy-DCF, 5-COOH-DCF, 2',7'-Dichloro-3',6'-dihydroxy-3-oxospiro[2-benzofuran-1,9'-xanthene]-5-carboxylic acid, Spiro[isobenzofuran-1(3H),9'-[9H]xanthene]-5-carboxylic acid, 2',7'-dichloro-3',6'-dihydroxy-3-oxo-

2',7'-Dichloro-3',6'-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-5-carboxylic acid (CAS 142975-81-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C21H10Cl2O7 and a molecular weight of 445.20600 g/mol. It is also known as 5-Carboxy-2',7'-dichlorofluorescein, 5-Carboxy-DCF and 5-COOH-DCF. Key properties include a boiling point of 732.3ºC at 760mmHg, a density of 1.86g/cm3 and a flash point of 396.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

142975-81-3

Jingsj CID

J-1339288-4

Molecular Formula

C₂₁H₁₀Cl₂O₇

Chinese Name

2',7'-二氯-3',6'-二羟基-3-氧代-3H-螺[异苯并呋喃-1,9'-氧杂蒽]-5-羧酸

Molecular Weight

445.20600 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026