(Z)-3-Benzylidene-3H-isochromene-1,4-dione

Also known as: 3-Benzylideneisochroman-1,4-dione, (E)-3-Benzylidene-3H-isochromene-1,4-dione, 1H-2-Benzopyran-1,4(3H)-dione, 3-(phenylmethylene)-, 3-(Phenylmethylene)-1H-2-benzopyran-1,4(3H)-dione

(Z)-3-Benzylidene-3H-isochromene-1,4-dione (CAS 1681-79-4) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C16H10O3 and a molecular weight of 250.24900 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1681-79-4
Jingsj CID: J-1314381-2
Molecular Formula: C₁₆H₁₀O₃
Molecular Weight: 250.24900 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Exact Mass	250.06300
PSA	43.37000
LogP	3.08080

Customs & Trade Information

HS Code	2932999099
Summary	2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. 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 (Z)-3-Benzylidene-3H-isochromene-1,4-dione?

The CAS number of (Z)-3-Benzylidene-3H-isochromene-1,4-dione is 1681-79-4.

What are the molecular formula and molecular weight of (Z)-3-Benzylidene-3H-isochromene-1,4-dione?

(Z)-3-Benzylidene-3H-isochromene-1,4-dione has molecular formula C16H10O3 and molecular weight 250.24900 g/mol.

What are the upstream and downstream products of (Z)-3-Benzylidene-3H-isochromene-1,4-dione?

For (Z)-3-Benzylidene-3H-isochromene-1,4-dione, Upstream Products: 1H-2-Benzopyran-1,4(3H)-dione, Benzaldehyde.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "(Z)-3-Benzylidene-3H-isochromene-1,4-dione (CAS 1681-79-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1314381-2 (accessed 2026-11-09).

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