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5-(5-Bromo-2-thienyl)-1H-tetrazole

5-(5-溴-2-噻吩基)-1H-四唑

Also known as: 5-(5-bromothiophen-2-yl)-1H-tetrazole, 5-(5-bromothiophen-2-yl)-2H-tetrazole, 5-(5-Bromo-2-thienyl)-1H-tetrazole solution, 5-(5-BROMO-2-THIENYL)-1H-TETRAZOLE, 30 &, 5-(5-BROMO-2-THIENYL)-1H-TETRAZOLE, 98+%, 5-(5-Bromothiophen-2-yl), MFCD01075734, JRH-09801, 5-(5-Bromothiophen-2-yl)-1H-tetrazole, 97%

5-(5-Bromo-2-thienyl)-1H-tetrazole (CAS 211943-12-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H3BrN4S and a molecular weight of 231.07300 g/mol. It is also known as 5-(5-bromothiophen-2-yl)-1H-tetrazole, 5-(5-bromothiophen-2-yl)-2H-tetrazole and 5-(5-Bromo-2-thienyl)-1H-tetrazole solution. Key properties include a melting point of 225ºC (dec.), a boiling point of 157-158ºC, a density of 1.952g/cm3 and a flash point of 197.9ºC. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
211943-12-3
Jingsj CID
J-49498-4
Molecular Formula
C5H3BrN4S
Chinese Name
5-(5-溴-2-噻吩基)-1H-四唑
Molecular Weight
231.07300 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point225ºC (dec.)
Boiling Point157-158ºC
Density1.952g/cm3
Flash Point197.9ºC

GHS Safety & Compliance

Flammable / Irritant / Health HazardSignal word: Danger

Frequently Asked Questions

What is the CAS number of 5-(5-Bromo-2-thienyl)-1H-tetrazole?

The CAS number of 5-(5-Bromo-2-thienyl)-1H-tetrazole is 211943-12-3.

What are the molecular formula and molecular weight of 5-(5-Bromo-2-thienyl)-1H-tetrazole?

5-(5-Bromo-2-thienyl)-1H-tetrazole has molecular formula C5H3BrN4S and molecular weight 231.07300 g/mol.

Is 5-(5-Bromo-2-thienyl)-1H-tetrazole hazardous?

5-(5-Bromo-2-thienyl)-1H-tetrazole has GHS signal word Danger.

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

Last updated:

How to cite: Jingsj. "5-(5-Bromo-2-thienyl)-1H-tetrazole (CAS 211943-12-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-49498-4 (accessed 2026-10-22).

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