3,3-dimethylphthalide
Also known as: 1(3H)-Isobenzofuranone, 3,3-dimethyl-, 3,3-Dimethyl-1,3-dihydroisobenzofuran-1-one, 3,3-Dimethyl-2-benzofuran-1(3H)-one, 3,3-dimethyl-1(3H)-Isobenzofuranone, 3,3-dimethyl-1,3-dihydro-1-isobenzofuranone, 3,3-dimethyl-2-benzofuran-1-one, 3,3-dimethyl-3-hydroisobenzofuran-1-one, dimethylphthalide
3,3-dimethylphthalide (CAS 1689-09-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H10O2 and a molecular weight of 162.18500 g/mol. Key properties include a melting point of 69-70ºC, a boiling point of 291.1ºC at 760mmHg, a density of 1.122g/cm3 and a flash point of 117.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1689-09-4
- Jingsj CID
- J-1504933-9
- Molecular Formula
- C10H10O2
- Molecular Weight
- 162.18500 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 69-70ºC |
|---|---|
| Boiling Point | 291.1ºC at 760mmHg |
| Density | 1.122g/cm3 |
| Flash Point | 117.8ºC |
| Exact Mass | 162.06800 |
| PSA | 26.30000 |
| LogP | 2.09210 |
| Vapor Pressure | 0.00199mmHg at 25°C |
| Refractive Index | 1.533 |
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 3,3-dimethylphthalide?
The CAS number of 3,3-dimethylphthalide is 1689-09-4.
What are the molecular formula and molecular weight of 3,3-dimethylphthalide?
3,3-dimethylphthalide has molecular formula C10H10O2 and molecular weight 162.18500 g/mol.
What are the upstream and downstream products of 3,3-dimethylphthalide?
For 3,3-dimethylphthalide, Upstream Products: 2-(2-Iodophenyl)propan-2-ol, 2-Bromobenzoic acid, Phthalic anhydride; Downstream Products: 10,10-Dimethylanthrone, (2-Isopropylphenyl)methanol, 2-Isopropylbenzoic acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3,3-dimethylphthalide (CAS 1689-09-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1504933-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.