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3-Benzylidenephthalide

Also known as: Benzalphthalide, 3-Benzylidene-2-benzofuran-1(3H)-one, (3Z)-3-Benzylidene-2-benzofuran-1(3H)-one, 3-Benzylidenphthalide, Phthalide, 3-benzylidene-, Escalol 547, NSC 2824, 3-(Phenylmethylene)-1(3H)-isobenzofuranone, benzylidenephthalide, Benzalphthalid

3-Benzylidenephthalide (CAS 575-61-1) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C15H10O2 and a molecular weight of 222.24 g/mol. Key properties include a melting point of 99-102 °C(lit.), a boiling point of 374.1±42.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 156.9±25.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
575-61-1
Jingsj CID
J-41099-1
Molecular Formula
C15H10O2
Molecular Weight
222.24 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point99-102 °C(lit.)
Boiling Point374.1±42.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point156.9±25.3 °C
Exact Mass222.068085
PSA26.30000
LogP4.27
Vapor Pressure0.0±0.8 mmHg at 25°C
Refractive Index1.687

Activity & Biological Data

Additional Information[1]. S H Ganji, et al. Bacterial degradation of benzalphthalide. World J Microbiol Biotechnol. 1992 May;8(3):324-5.

Customs & Trade Information

HS Code2932209090
Summary2932209090. 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-Benzylidenephthalide?

The CAS number of 3-Benzylidenephthalide is 575-61-1.

What are the molecular formula and molecular weight of 3-Benzylidenephthalide?

3-Benzylidenephthalide has molecular formula C15H10O2 and molecular weight 222.24 g/mol.

What are the upstream and downstream products of 3-Benzylidenephthalide?

For 3-Benzylidenephthalide, Upstream Products: 2-Iodobenzoic acid, Phenylpropiolic acid, 1-(2-bromophenyl)-2-phenylethan-1-one; Downstream Products: 2-(2-Phenylethyl)benzoic acid, 3-Benzylphthalide, 2-Bromo-2-phenyl-1H-indene-1,3(2H)-dione.

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-Benzylidenephthalide (CAS 575-61-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-41099-1 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.