1(3H)-Isobenzofuranone, 6-methoxy-
Also known as: 6-Methoxy-3H-isobenzofuran-1-one, 6-Methoxyisobenzofuran-1(3H)-one, 6-Methoxyphthalide, 6-Methoxy-1,3-dihydro-2-benzofuran-1-one, 6-Methoxyphtalide, 6-Methoxyphthalid
1(3H)-Isobenzofuranone, 6-methoxy- (CAS 4741-63-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H8O3 and a molecular weight of 164.15800 g/mol. Key properties include a boiling point of 360.4ºC at 760mmHg, a density of 1.262g/cm3 and a flash point of 150.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 4741-63-3
- Jingsj CID
- J-1311275-9
- Molecular Formula
- C9H8O3
- Molecular Weight
- 164.15800 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 360.4ºC at 760mmHg |
|---|---|
| Density | 1.262g/cm3 |
| Flash Point | 150.4ºC |
| Exact Mass | 164.04700 |
| PSA | 35.53000 |
| LogP | 1.36560 |
| Refractive Index | 1.562 |
Customs & Trade Information
| HS Code | 2932209090 |
|---|---|
| Summary | 2932209090. other lactones. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 1(3H)-Isobenzofuranone, 6-methoxy-?
The CAS number of 1(3H)-Isobenzofuranone, 6-methoxy- is 4741-63-3.
What are the molecular formula and molecular weight of 1(3H)-Isobenzofuranone, 6-methoxy-?
1(3H)-Isobenzofuranone, 6-methoxy- has molecular formula C9H8O3 and molecular weight 164.15800 g/mol.
What are the upstream and downstream products of 1(3H)-Isobenzofuranone, 6-methoxy-?
For 1(3H)-Isobenzofuranone, 6-methoxy-, Upstream Products: Formaldehyde, 3-Methoxybenzoic acid, Diethylamine; Downstream Products: 4-Methoxy-1,2-benzenedimethanol, 4-Methoxyphthalic acid, 5-methoxy-1,3-isobenzofurandione.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1(3H)-Isobenzofuranone, 6-methoxy- (CAS 4741-63-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1311275-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.