3-Methoxyacetaminophen

Also known as: 3-Methoxyacetaminophen, 3-Methoxyparacetamol, 3-O-methyl-Acetaminophen, 4-Acetamido-2-methoxyphenol, 4-Acetylamino-2-methoxyphenol, N-(4-Hydroxy-3-methoxyphenyl)acetamide, Acetamide, N-(4-hydroxy-3-methoxyphenyl)-, Acetic Acid-(4-hydroxy-3-methoxy-anilide), m-Acetanisidide, 4'-hydroxy-, Zearalenone Impurity 8

3-Methoxyacetaminophen (CAS 3251-55-6) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C9H11NO3 and a molecular weight of 181.18900 g/mol. Key properties include a melting point of 118-122ºC, a boiling point of 396.5ºC at 760mmHg, a density of 1.25g/cm3 and a flash point of 193.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 3251-55-6
Jingsj CID: J-1505955-9
Molecular Formula: C₉H₁₁NO₃
Molecular Weight: 181.18900 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	118-122ºC
Boiling Point	396.5ºC at 760mmHg
Density	1.25g/cm3
Flash Point	193.6ºC
Exact Mass	181.07400
PSA	58.56000
LogP	1.43220
Refractive Index	1.592

Customs & Trade Information

HS Code	2924299090
Summary	2924299090. other cyclic amides (including cyclic carbamates) and their derivatives; salts thereof. 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 3-Methoxyacetaminophen?

The CAS number of 3-Methoxyacetaminophen is 3251-55-6.

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

3-Methoxyacetaminophen has molecular formula C9H11NO3 and molecular weight 181.18900 g/mol.

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

For 3-Methoxyacetaminophen, Upstream Products: 2-Methoxy-4-nitrophenol, 4-Amino-2-methoxyphenol, Guaiacol; Downstream Products: 4-Ethoxy-3-methoxyaniline.

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. "3-Methoxyacetaminophen (CAS 3251-55-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1505955-9 (accessed 2026-11-09).

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