Ethyl 3-aminobenzo[b]thiophene-2-carboxylate

Also known as: Benzo[b]thiophene-2-carboxylic acid, 3-amino-, ethyl ester, 3-Amino-benzo[b]thiophene-2-carboxylic acid ethyl ester, Ethyl 3-amino-1-benzothiophene-2-carboxylate, 3-Amino-2-carboethoxy-benzothiophene, 3-Aminobenzothiophene-2-carboxylic acid ethyl ester, AKOS 92613, ethyl 3-aminobenzothiophene-2-carboxylate

Ethyl 3-aminobenzo[b]thiophene-2-carboxylate (CAS 34761-09-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H11NO2S and a molecular weight of 221.275 g/mol. Key properties include a boiling point of 373.4±22.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 179.6±22.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 34761-09-6
Jingsj CID: J-1338521-2
Molecular Formula: C₁₁H₁₁NO₂S
Molecular Weight: 221.275 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	373.4±22.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	179.6±22.3 °C
Exact Mass	221.051056
PSA	80.56000
LogP	4.66
Vapor Pressure	0.0±0.8 mmHg at 25°C
Refractive Index	1.666
Storage Conditions	2-8°C

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 Ethyl 3-aminobenzo[b]thiophene-2-carboxylate?

The CAS number of Ethyl 3-aminobenzo[b]thiophene-2-carboxylate is 34761-09-6.

What are the molecular formula and molecular weight of Ethyl 3-aminobenzo[b]thiophene-2-carboxylate?

Ethyl 3-aminobenzo[b]thiophene-2-carboxylate has molecular formula C11H11NO2S and molecular weight 221.275 g/mol.

What are the upstream and downstream products of Ethyl 3-aminobenzo[b]thiophene-2-carboxylate?

For Ethyl 3-aminobenzo[b]thiophene-2-carboxylate, Upstream Products: 2-Fluorobenzonitrile, Ethyl thioglycolate, 2-Nitrobenzonitrile.

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. "Ethyl 3-aminobenzo[b]thiophene-2-carboxylate (CAS 34761-09-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1338521-2 (accessed 2026-11-09).

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