Phthalide-3-acetic acid
Also known as: 2-(3-oxo-1,3-dihydro-2-benzofuran-1-yl)acetic acid, 2-(3-oxo-1H-2-benzofuran-1-yl)acetic acid, 2-(3-oxo-1H-isobenzofuran-1-yl)acetic acid, Phthalidine-3-acetic acid, 1(3H)-Isobenzofuranone-3-acetic acid, MFCD00051729
Phthalide-3-acetic acid (CAS 4743-58-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H8O4 and a molecular weight of 192.16800 g/mol. Key properties include a melting point of 151-152°C, a boiling point of 440.1ºC at 760 mmHg, a density of 1.389 g/cm3 and a flash point of 184.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 4743-58-2
- Jingsj CID
- J-1377790-7
- Molecular Formula
- C10H8O4
- Molecular Weight
- 192.16800 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 151-152°C |
|---|---|
| Boiling Point | 440.1ºC at 760 mmHg |
| Density | 1.389 g/cm3 |
| Flash Point | 184.1ºC |
| Exact Mass | 192.04200 |
| PSA | 63.60000 |
| LogP | 1.37280 |
| Refractive Index | 1.586 |
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 Phthalide-3-acetic acid?
The CAS number of Phthalide-3-acetic acid is 4743-58-2.
What are the molecular formula and molecular weight of Phthalide-3-acetic acid?
Phthalide-3-acetic acid has molecular formula C10H8O4 and molecular weight 192.16800 g/mol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Phthalide-3-acetic acid (CAS 4743-58-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1377790-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.