Jingsj
.mol.sdf

4-Methoxyphenylacetic Anhydride

4-甲氧基苯乙酸酐

Also known as: 2-(4-Methoxyphenyl)acetic anhydride, [2-(4-methoxyphenyl)acetyl] 2-(4-methoxyphenyl)acetate, Benzeneacetic acid, 4-methoxy-, anhydride with 4-methoxybenzeneacetic acid

4-Methoxyphenylacetic Anhydride (CAS 3951-10-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C18H18O5 and a molecular weight of 314.33300 g/mol. It is also known as 2-(4-Methoxyphenyl)acetic anhydride, [2-(4-methoxyphenyl)acetyl] 2-(4-methoxyphenyl)acetate and Benzeneacetic acid, 4-methoxy-, anhydride with 4-methoxybenzeneacetic acid. Key property: a melting point of 76ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
3951-10-8
Jingsj CID
J-28455-4
Molecular Formula
C18H18O5
Chinese Name
4-甲氧基苯乙酸酐
Molecular Weight
314.33300 g/mol
Category
Organic Acids
Last updated
8/21/2026

No offers for this compound yet.

Request a quote

Physicochemical Properties

Melting Point76ºC
Exact Mass314.11500
PSA61.83000
LogP2.55880
Refractive Index1.553

Customs & Trade Information

HS Code2918990090
Summary2918990090. other carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 4-Methoxyphenylacetic Anhydride?

The CAS number of 4-Methoxyphenylacetic Anhydride is 3951-10-8.

What are the molecular formula and molecular weight of 4-Methoxyphenylacetic Anhydride?

4-Methoxyphenylacetic Anhydride has molecular formula C18H18O5 and molecular weight 314.33300 g/mol.

What are the upstream and downstream products of 4-Methoxyphenylacetic Anhydride?

For 4-Methoxyphenylacetic Anhydride, Upstream Products: 4-Methoxyphenylacetic acid, 4-Methoxyphenylacetyl chloride; Downstream Products: 4-Methoxybenzyl bromide.

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

Last updated:

How to cite: Jingsj. "4-Methoxyphenylacetic Anhydride (CAS 3951-10-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-28455-4 (accessed 2026-10-28).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.