3,4,6-Trimethoxy-1(3H)-isobenzofuranone
Also known as: 3,4,6-Trimethoxyphthalide, 3,4,6-trimethoxy-3H-2-benzofuran-1-one, 3,4,6-trimethoxy-1,3-dihydro-1-isobenzofuranone, 3,4,6-trimethoxy-3H-isobenzofuran-1-one, 1(3H)-Isobenzofuranone, 3,4,6-trimethoxy-
3,4,6-Trimethoxy-1(3H)-isobenzofuranone (CAS 189454-29-3) 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. Key properties include a melting point of 149-152ºC(lit.), a boiling point of 394.2ºC at 760 mmHg, a density of 1.28g/cm3 and a flash point of 178.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 189454-29-3
- Jingsj CID
- J-46458-4
- Molecular Formula
- C11H12O5
- Molecular Weight
- 224.21000 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 149-152ºC(lit.) |
|---|---|
| Boiling Point | 394.2ºC at 760 mmHg |
| Density | 1.28g/cm3 |
| Flash Point | 178.4ºC |
| Exact Mass | 224.06800 |
| PSA | 53.99000 |
| LogP | 1.51920 |
| Vapor Pressure | 2.02E-06mmHg at 25°C |
| Refractive Index | 1.54 |
Frequently Asked Questions
What is the CAS number of 3,4,6-Trimethoxy-1(3H)-isobenzofuranone?
The CAS number of 3,4,6-Trimethoxy-1(3H)-isobenzofuranone is 189454-29-3.
What are the molecular formula and molecular weight of 3,4,6-Trimethoxy-1(3H)-isobenzofuranone?
3,4,6-Trimethoxy-1(3H)-isobenzofuranone has molecular formula C11H12O5 and molecular weight 224.21000 g/mol.
What are the upstream and downstream products of 3,4,6-Trimethoxy-1(3H)-isobenzofuranone?
For 3,4,6-Trimethoxy-1(3H)-isobenzofuranone, Upstream Products: methyl 2-formyl-3,5-dimethoxybenzoate, Diethylzinc, Methyl 3,5-dimethoxybenzoate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3,4,6-Trimethoxy-1(3H)-isobenzofuranone (CAS 189454-29-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-46458-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.