2-amino-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carbonitrile

2-氨基-5,6-二氢-4H-环戊并[b]噻吩-3-甲腈

Also known as: 2-AMINO-5,6-DIHYDRO-4H-CYCLOPENTA[B]THIOPHENE-3-CARBONITRILE, 2-Amino-4,5-trimethylene-3-thiophenecarbonitrile, 2-amino-3-cyano-5,6-dihydro-4H-cyclopenta[b]thiophene, 4H-Cyclopenta[b]thiophene-3-carbonitrile, 2-amino-5,6-dihydro-, 2-amino-3-cyanocyclopenta[b]thiophene

2-amino-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carbonitrile (CAS 70291-62-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H8N2S and a molecular weight of 164.22800 g/mol. It is also known as 2-AMINO-5,6-DIHYDRO-4H-CYCLOPENTA[B]THIOPHENE-3-CARBONITRILE, 2-Amino-4,5-trimethylene-3-thiophenecarbonitrile and 2-amino-3-cyano-5,6-dihydro-4H-cyclopenta[b]thiophene. Key properties include a boiling point of 379.9ºC at 760 mmHg, a density of 1.33 g/cm3 and a flash point of 183.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
70291-62-2
Jingsj CID
J-8464-2
Molecular Formula
C8H8N2S
Chinese Name
2-氨基-5,6-二氢-4H-环戊并[b]噻吩-3-甲腈
Molecular Weight
164.22800 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point379.9ºC at 760 mmHg
Density1.33 g/cm3
Flash Point183.6ºC

Frequently Asked Questions

What is the CAS number of 2-amino-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carbonitrile?

The CAS number of 2-amino-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carbonitrile is 70291-62-2.

What are the molecular formula and molecular weight of 2-amino-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carbonitrile?

2-amino-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carbonitrile has molecular formula C8H8N2S and molecular weight 164.22800 g/mol.

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

Last updated:

How to cite: Jingsj. "2-amino-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carbonitrile (CAS 70291-62-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-8464-2 (accessed 2026-10-23).

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