3-methoxy-5-methyl-2-thiophenecarboxylic acid

Also known as: 3-methoxy-5-methyl-2-thiophenecarboxylic acid (SALTDATA: FREE), 2-Thiophenecarboxylic acid, 3-methoxy-5-methyl-, 3-methoxy-5-methyl-2-thiophenecarboxylic acid, 3-methoxy-5-methylthiophene-2-carboxylic acid

3-methoxy-5-methyl-2-thiophenecarboxylic acid (CAS 83261-26-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H8O3S and a molecular weight of 172.20200 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 83261-26-1
Jingsj CID: J-1520879-4
Molecular Formula: C₇H₈O₃S
Molecular Weight: 172.20200 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Exact Mass	172.01900
PSA	74.77000
LogP	1.76330

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. 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 3-methoxy-5-methyl-2-thiophenecarboxylic acid?

The CAS number of 3-methoxy-5-methyl-2-thiophenecarboxylic acid is 83261-26-1.

What are the molecular formula and molecular weight of 3-methoxy-5-methyl-2-thiophenecarboxylic acid?

3-methoxy-5-methyl-2-thiophenecarboxylic acid has molecular formula C7H8O3S and molecular weight 172.20200 g/mol.

What are the upstream and downstream products of 3-methoxy-5-methyl-2-thiophenecarboxylic acid?

For 3-methoxy-5-methyl-2-thiophenecarboxylic acid, Upstream Products: methyl 3-methoxy-5-methylthiophene-2-carboxylate, Methyl 3-hydroxy-5-methyl-2-thiophenecarboxylate.

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-methoxy-5-methyl-2-thiophenecarboxylic acid (CAS 83261-26-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1520879-4 (accessed 2026-11-09).

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