(2Z)-2-(3-oxo-1,3-dihydro-2-benzofuran-1-ylidene)acetic acid
Also known as: phthalideneacetic acid, 2-(3-oxo-1,3-dihydroisobenzofuran-1-ylidene)acetic acid, 3-carboxymethylenephthalide, acetic acid, 2-(3-oxo-1(3H)-isobenzofuranylidene)-, (3-oxo-3H-isobenzofuran-1-ylidene)-acetic acid, phthalidyliden-acetic acid, phthalylacetic acid, phthalylessigsaeure, ButtPark 934-19, CHEMBRDG-BB 5116485
(2Z)-2-(3-oxo-1,3-dihydro-2-benzofuran-1-ylidene)acetic acid (CAS 4743-57-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H6O4 and a molecular weight of 190.15200 g/mol. Key properties include a melting point of 287ºC, a boiling point of 362.9ºC at 760mmHg, a density of 1.612g/cm3 and a flash point of 151ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 4743-57-1
- Jingsj CID
- J-1524254-3
- Molecular Formula
- C10H6O4
- Molecular Weight
- 190.15200 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 287ºC |
|---|---|
| Boiling Point | 362.9ºC at 760mmHg |
| Density | 1.612g/cm3 |
| Flash Point | 151ºC |
| Exact Mass | 190.02700 |
| PSA | 63.60000 |
| LogP | 1.28250 |
| Refractive Index | 1.749 |
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 (2Z)-2-(3-oxo-1,3-dihydro-2-benzofuran-1-ylidene)acetic acid?
The CAS number of (2Z)-2-(3-oxo-1,3-dihydro-2-benzofuran-1-ylidene)acetic acid is 4743-57-1.
What are the molecular formula and molecular weight of (2Z)-2-(3-oxo-1,3-dihydro-2-benzofuran-1-ylidene)acetic acid?
(2Z)-2-(3-oxo-1,3-dihydro-2-benzofuran-1-ylidene)acetic acid has molecular formula C10H6O4 and molecular weight 190.15200 g/mol.
What are the upstream and downstream products of (2Z)-2-(3-oxo-1,3-dihydro-2-benzofuran-1-ylidene)acetic acid?
For (2Z)-2-(3-oxo-1,3-dihydro-2-benzofuran-1-ylidene)acetic acid, Upstream Products: Phthalic anhydride, Potassium acetate; Downstream Products: Phthalide-3-acetic acid, 2-Acetylbenzoic acid, Ethyl 2-acetylbenzoate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "(2Z)-2-(3-oxo-1,3-dihydro-2-benzofuran-1-ylidene)acetic acid (CAS 4743-57-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1524254-3 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.