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Methyl thieno[3,2-b]thiophene-2-carboxylate

Also known as: Thieno[3,2-b]thiophene-2-carboxylic acid methyl ester, Methyl thieno[3,2-b]thiophene-2-carboxylate, 97, Thieno[3,2-b]thiophene-2-carboxylic acid, methyl ester, Methyl thieno[3,2-b]thiophene-5-carboxylate, Thieno<3,2-b>thiophen-2-carbonsaeure-methylester

Methyl thieno[3,2-b]thiophene-2-carboxylate (CAS 98800-10-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H6O2S2 and a molecular weight of 198.26200 g/mol. Key properties include a melting point of 93-95ºC, a boiling point of 306.1ºC at 760mmHg, a density of 1.412g/cm3 and a flash point of 138.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
98800-10-3
Jingsj CID
J-1069019-4
Molecular Formula
C8H6O2S2
Molecular Weight
198.26200 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point93-95ºC
Boiling Point306.1ºC at 760mmHg
Density1.412g/cm3
Flash Point138.9ºC
Exact Mass197.98100
PSA82.78000
LogP2.74940
Refractive Index1.673

Customs & Trade Information

HS Code2934999090
Summary2934999090. 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 thieno[3,2-b]thiophene-2-carboxylate?

The CAS number of Methyl thieno[3,2-b]thiophene-2-carboxylate is 98800-10-3.

What are the molecular formula and molecular weight of Methyl thieno[3,2-b]thiophene-2-carboxylate?

Methyl thieno[3,2-b]thiophene-2-carboxylate has molecular formula C8H6O2S2 and molecular weight 198.26200 g/mol.

What are the upstream and downstream products of Methyl thieno[3,2-b]thiophene-2-carboxylate?

For Methyl thieno[3,2-b]thiophene-2-carboxylate, Upstream Products: 2-Thiophenecarboxaldehyde, 3-Bromothiophene-2-carbaldehyde, Methanol; Downstream Products: Thieno[3,2-b]thiophene-2-carbaldehyde.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Methyl thieno[3,2-b]thiophene-2-carboxylate (CAS 98800-10-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1069019-4 (accessed 2026-11-09).

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