4,5,6-Trimethoxyisobenzofuran-1(3H)-one

4,5,6-三甲氧基异苯并呋喃-1(3H)-酮

Also known as: 1(3H)-Isobenzofuranone, 4,5,6-trimethoxy-, 4,5,6-Trimethoxy-3H-isobenzofuran-1-one, 4,5,6-Trimethoxy-2-benzofuran-1(3H)-one, 4,5,6-Trimethoxy-3H-2-benzofuran-1-one, 4,5,6-Trimethoxyphthalide, 4,5,6-Trimethoxy-phthalide, NSC 26223, AKOS 212-44

4,5,6-Trimethoxyisobenzofuran-1(3H)-one (CAS 4087-80-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H12O5 and a molecular weight of 224.21000 g/mol. It is also known as 1(3H)-Isobenzofuranone, 4,5,6-trimethoxy-, 4,5,6-Trimethoxy-3H-isobenzofuran-1-one and 4,5,6-Trimethoxy-2-benzofuran-1(3H)-one. Key properties include a boiling point of 287ºC at 760 mmHg, a density of 1.259g/cm3 and a flash point of 122.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

4087-80-3

Jingsj CID

J-1314336-1

Molecular Formula

C₁₁H₁₂O₅

Chinese Name

4,5,6-三甲氧基异苯并呋喃-1(3H)-酮

Molecular Weight

224.21000 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026