5-Bromo-3-chloropyrazin-2-amine

Also known as: 2-Amino-5-bromo-3-chloropyrazine, 2-Amino-3-chloro-5-bromopyrazine, 5-Bromo-3-chloro-2-pyrazinamine, 5-Bromo-3-chloro-pyrazin-2-ylamine, 2-Pyrazinamine, 5-bromo-3-chloro-

5-Bromo-3-chloropyrazin-2-amine (CAS 21943-13-5) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C4H3BrClN3 and a molecular weight of 208.444 g/mol. Key properties include a melting point of 128℃, a boiling point of 271.3±35.0 °C at 760 mmHg, a density of 2.0±0.1 g/cm3 and a flash point of 117.9±25.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 21943-13-5
Jingsj CID: J-1436077-1
Molecular Formula: C₄H₃BrClN₃
Molecular Weight: 208.444 g/mol
Category: Organic Bases
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	128℃
Boiling Point	271.3±35.0 °C at 760 mmHg
Density	2.0±0.1 g/cm3
Flash Point	117.9±25.9 °C
Exact Mass	206.919876
PSA	51.80000
LogP	2.80
Vapor Pressure	0.0±0.6 mmHg at 25°C
Refractive Index	1.660

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. 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-Bromo-3-chloropyrazin-2-amine?

The CAS number of 5-Bromo-3-chloropyrazin-2-amine is 21943-13-5.

What are the molecular formula and molecular weight of 5-Bromo-3-chloropyrazin-2-amine?

5-Bromo-3-chloropyrazin-2-amine has molecular formula C4H3BrClN3 and molecular weight 208.444 g/mol.

What are the upstream and downstream products of 5-Bromo-3-chloropyrazin-2-amine?

For 5-Bromo-3-chloropyrazin-2-amine, Upstream Products: 2-Amino-3-chloropyrazine.

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. "5-Bromo-3-chloropyrazin-2-amine (CAS 21943-13-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1436077-1 (accessed 2026-11-09).

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