4-acetoxy-3,5-dimethoxybenzoic acid

Also known as: 4-(acetyloxy)-3,5-dimethoxybenzoic acid, Acetyl syringic acid, Benzoic acid, 4-(acetyloxy)-3,5-dimethoxy-, O-acetylsyringic acid, 3,5-dimethoxy-4-acetoxybenzoic acid, Syringic acid acetate, RARECHEM AL BE 0701, TIMTEC-BB SBB000792

4-acetoxy-3,5-dimethoxybenzoic acid (CAS 6318-20-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H12O6 and a molecular weight of 240.20900 g/mol. Key properties include a melting point of 190-191ºC, a boiling point of 338.9ºC at 760 mmHg, a density of 1.28g/cm3 and a flash point of 127.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 6318-20-3
Jingsj CID: J-1354190-7
Molecular Formula: C₁₁H₁₂O₆
Molecular Weight: 240.20900 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	190-191ºC
Boiling Point	338.9ºC at 760 mmHg
Density	1.28g/cm3
Flash Point	127.4ºC
Exact Mass	240.06300
PSA	82.06000
LogP	1.32730
Refractive Index	1.529

Customs & Trade Information

HS Code	2918990090
Summary	2918990090. 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-acetoxy-3,5-dimethoxybenzoic acid?

The CAS number of 4-acetoxy-3,5-dimethoxybenzoic acid is 6318-20-3.

What are the molecular formula and molecular weight of 4-acetoxy-3,5-dimethoxybenzoic acid?

4-acetoxy-3,5-dimethoxybenzoic acid has molecular formula C11H12O6 and molecular weight 240.20900 g/mol.

What are the upstream and downstream products of 4-acetoxy-3,5-dimethoxybenzoic acid?

For 4-acetoxy-3,5-dimethoxybenzoic acid, Upstream Products: Syringic acid, Acetyl chloride, 3,4,5-Trimethoxybenzoic acid; Downstream Products: 3,5-Dimethoxy-4-hydroxyphenylacetic acid, Sinapaldehyde, Methyl 4-hydroxy-3,5-dimethoxybenzoate.

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. "4-acetoxy-3,5-dimethoxybenzoic acid (CAS 6318-20-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1354190-7 (accessed 2026-11-09).

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