3-Methyl-1(3H)-isobenzofuranone
Also known as: 3-Methyl-2-benzofuran-1(3H)-one, 3-Methyl-3H-2-benzofuran-1-one, 3-Methylisobenzofuran-1(3H)-one, 3-Methylphthalide, 3-Methyl-1,3-dihydro-2-benzofuran-1-one, Butylphthalide Impurity 10, Butyphthalide impurity10, 3-Butylphthalide Impurity 8, 3-Butylphthalide Impurity A, n-Butylphthalide-010
3-Methyl-1(3H)-isobenzofuranone (CAS 3453-64-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H8O2 and a molecular weight of 148.15900 g/mol. Key properties include a boiling point of 270.9ºC at 760mmHg, a density of 1.175g/cm3 and a flash point of 107.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3453-64-3
- Jingsj CID
- J-1484919-5
- Molecular Formula
- C9H8O2
- Molecular Weight
- 148.15900 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 270.9ºC at 760mmHg |
|---|---|
| Density | 1.175g/cm3 |
| Flash Point | 107.9ºC |
| Exact Mass | 148.05200 |
| PSA | 26.30000 |
| LogP | 1.91800 |
| Refractive Index | 1.551 |
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 3-Methyl-1(3H)-isobenzofuranone?
The CAS number of 3-Methyl-1(3H)-isobenzofuranone is 3453-64-3.
What are the molecular formula and molecular weight of 3-Methyl-1(3H)-isobenzofuranone?
3-Methyl-1(3H)-isobenzofuranone has molecular formula C9H8O2 and molecular weight 148.15900 g/mol.
What are the upstream and downstream products of 3-Methyl-1(3H)-isobenzofuranone?
For 3-Methyl-1(3H)-isobenzofuranone, Upstream Products: 2-Ethylbenzoic acid, 2-acetylbenzaldehyde, 2-Acetylbenzoic acid; Downstream Products: 2-Ethylbenzonitrile, 2-Ethylbenzoic acid, 4-Ethylaniline.
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-Methyl-1(3H)-isobenzofuranone (CAS 3453-64-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1484919-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.