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5-Nitrothiophene-2-carboxylic acid

Also known as: 5-Nitro-2-thiophenecarboxylic acid, 5-Nitro-2-thenoic acid, 2-Thiophenecarboxylic acid, 5-nitro-, 2-Carboxy-5-nitrothiophene, 5-Nitrothiophene-2-carboxylic acid, 5-nitro-2-thiophenecarboxylic

5-Nitrothiophene-2-carboxylic acid (CAS 6317-37-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H3NO4S and a molecular weight of 173.147 g/mol. Key properties include a melting point of 156-159 (Lit.)ºC, a boiling point of 367.2±27.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 175.9±23.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
6317-37-9
Jingsj CID
J-23437-7
Molecular Formula
C5H3NO4S
Molecular Weight
173.147 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point156-159 (Lit.)ºC
Boiling Point367.2±27.0 °C at 760 mmHg
Density1.7±0.1 g/cm3
Flash Point175.9±23.7 °C
Exact Mass172.978271
PSA111.36000
LogP1.52
Vapor Pressure0.0±0.9 mmHg at 25°C
Refractive Index1.660

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 5-Nitrothiophene-2-carboxylic acid?

The CAS number of 5-Nitrothiophene-2-carboxylic acid is 6317-37-9.

What are the molecular formula and molecular weight of 5-Nitrothiophene-2-carboxylic acid?

5-Nitrothiophene-2-carboxylic acid has molecular formula C5H3NO4S and molecular weight 173.147 g/mol.

What are the upstream and downstream products of 5-Nitrothiophene-2-carboxylic acid?

For 5-Nitrothiophene-2-carboxylic acid, Upstream Products: 5-Nitrothiophene-2-carboxaldehyde, 2-Thiophenecarboxylic acid, Sodium phosphate monobasic monohydrate; Downstream Products: 2-Acetyl-5-nitrothiophene, 5-Nitrothiophene-2-carbonyl chloride, 4-Amino-2-thiophenecarboxylic acid.

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

Last updated:

How to cite: Jingsj. "5-Nitrothiophene-2-carboxylic acid (CAS 6317-37-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-23437-7 (accessed 2026-11-09).

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