4,5-Dimethoxy-2-nitrocinnamic acid

Also known as: 2-Nitro-4,5-dimethoxy-trans-cinnamic acid, 2-nitro-4,5-dimethoxycinnamic acid, 3,4-DIMETHOXY-6-NITROCINNAMIC ACID, 3-(3,4-Dimethoxy-6-nitrophenyl)propenoic acid, 3-(4,5-DIMETHOXY-2-NITROPHENYL)ACRYLIC ACID, 4,5-Dimethoxy-2-nitrociamic acid, 6-Nitro-3,4-dimethoxy-trans-cinnamic acid, 6-nitro-3,4-dimethoxycinnamic acid, LABOTEST-BB LT00453683, MFCD00017017, RARECHEM BK HW 0176, TIMTEC-BB SBB006555

4,5-Dimethoxy-2-nitrocinnamic acid (CAS 20567-38-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H11NO6 and a molecular weight of 253.20800 g/mol. Key properties include a melting point of 293 °C (dec.)(lit.), a boiling point of 482.9ºC at 760mmHg, a density of 1.369g/cm3 and a flash point of 245.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 20567-38-8
Jingsj CID: J-19507-3
Molecular Formula: C₁₁H₁₁NO₆
Molecular Weight: 253.20800 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	293 °C (dec.)(lit.)
Boiling Point	482.9ºC at 760mmHg
Density	1.369g/cm3
Flash Point	245.8ºC
Exact Mass	253.05900
PSA	101.58000
LogP	2.23300
Vapor Pressure	3.9E-10mmHg at 25°C
Refractive Index	1.604

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 4,5-Dimethoxy-2-nitrocinnamic acid?

The CAS number of 4,5-Dimethoxy-2-nitrocinnamic acid is 20567-38-8.

What are the molecular formula and molecular weight of 4,5-Dimethoxy-2-nitrocinnamic acid?

4,5-Dimethoxy-2-nitrocinnamic acid has molecular formula C11H11NO6 and molecular weight 253.20800 g/mol.

What are the upstream and downstream products of 4,5-Dimethoxy-2-nitrocinnamic acid?

For 4,5-Dimethoxy-2-nitrocinnamic acid, Upstream Products: (E)-3-(3,4-dimethoxyphenyl)acrylic acid, Malonic acid, 6-Nitroveratraldehyde.

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. "4,5-Dimethoxy-2-nitrocinnamic acid (CAS 20567-38-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-19507-3 (accessed 2026-11-09).

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