Diethyl 3,4-diaminothieno[2,3-b]thiophene-2,5-dicarboxylate

3,4-二氨基噻吩并[2,3-b]噻吩-2,5-二羧酸二乙酯

Also known as: 3,4-DIAMINO-THIENO[2,3-B]THIOPHENE-2,5-DICARBOXYLIC ACID DIETHYL ESTER, Thieno[2,3-b]thiophene-2,5-dicarboxylic acid, 3,4-diamino-, 2,5-diethyl ester, Diethyl 3,4-diaminothieno[2,3-b]thiophene-2,5-dicarboxylate

Diethyl 3,4-diaminothieno[2,3-b]thiophene-2,5-dicarboxylate (CAS 4004-20-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C12H14N2O4S2 and a molecular weight of 314.38100 g/mol. It is also known as 3,4-DIAMINO-THIENO[2,3-B]THIOPHENE-2,5-DICARBOXYLIC ACID DIETHYL ESTER and Thieno[2,3-b]thiophene-2,5-dicarboxylic acid, 3,4-diamino-, 2,5-diethyl ester. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 4004-20-0
Jingsj CID: J-1156753-8
Molecular Formula: C₁₂H₁₄N₂O₄S₂
Chinese Name: 3,4-二氨基噻吩并[2,3-b]噻吩-2,5-二羧酸二乙酯
Molecular Weight: 314.38100 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Frequently Asked Questions

What is the CAS number of Diethyl 3,4-diaminothieno[2,3-b]thiophene-2,5-dicarboxylate?

The CAS number of Diethyl 3,4-diaminothieno[2,3-b]thiophene-2,5-dicarboxylate is 4004-20-0.

What are the molecular formula and molecular weight of Diethyl 3,4-diaminothieno[2,3-b]thiophene-2,5-dicarboxylate?

Diethyl 3,4-diaminothieno[2,3-b]thiophene-2,5-dicarboxylate has molecular formula C12H14N2O4S2 and molecular weight 314.38100 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Diethyl 3,4-diaminothieno[2,3-b]thiophene-2,5-dicarboxylate (CAS 4004-20-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1156753-8 (accessed 2026-10-26).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.