Methyl 4-bromo-3-methoxy-5-methylthiophene-2-carboxylate

Also known as: Methyl 4-bromo-3-methoxy-5-methyl-2-thiophenecarboxylate, 2-Thiophenecarboxylic acid, 4-bromo-3-methoxy-5-methyl-, methyl ester

Methyl 4-bromo-3-methoxy-5-methylthiophene-2-carboxylate (CAS 123342-03-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H9BrO3S and a molecular weight of 265.12400 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 123342-03-0
Jingsj CID: J-1458244-6
Molecular Formula: C₈H₉BrO₃S
Molecular Weight: 265.12400 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Exact Mass	263.94600
PSA	63.77000
LogP	2.61420

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 Methyl 4-bromo-3-methoxy-5-methylthiophene-2-carboxylate?

The CAS number of Methyl 4-bromo-3-methoxy-5-methylthiophene-2-carboxylate is 123342-03-0.

What are the molecular formula and molecular weight of Methyl 4-bromo-3-methoxy-5-methylthiophene-2-carboxylate?

Methyl 4-bromo-3-methoxy-5-methylthiophene-2-carboxylate has molecular formula C8H9BrO3S and molecular weight 265.12400 g/mol.

What are the upstream and downstream products of Methyl 4-bromo-3-methoxy-5-methylthiophene-2-carboxylate?

For Methyl 4-bromo-3-methoxy-5-methylthiophene-2-carboxylate, Upstream Products: methyl 4-bromo-3-hydroxy-5-methylthiophene-2-carboxylate, Dimethyl sulfate, 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. "Methyl 4-bromo-3-methoxy-5-methylthiophene-2-carboxylate (CAS 123342-03-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1458244-6 (accessed 2026-11-09).

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