3-bromo-[1,2,4]triazolo[3,4-a]phthalazine

3-溴-[1,2,4]三唑并[3,4-a]酞嗪

Also known as: 3-bromo-s-triazolo[3,4-a]phthalazine, 1,2,4-triazolo[3,4-a]phthalazine, 3-bromo-, s-triazolo[3,4-a]phthalazine, 3-bromo- (8CI), 3-bromo-1,2,4-triazolo[3,4-a]phthalazine, 3-bromo-1,2,4-triazolo[3,4-α]phthalazine

3-bromo-[1,2,4]triazolo[3,4-a]phthalazine (CAS 21537-95-1) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C9H5BrN4 and a molecular weight of 249.06700 g/mol. It is also known as 3-bromo-s-triazolo[3,4-a]phthalazine, 1,2,4-triazolo[3,4-a]phthalazine, 3-bromo- and s-triazolo[3,4-a]phthalazine, 3-bromo- (8CI). Key property: a melting point of 206-208ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
21537-95-1
Jingsj CID
J-1351353-1
Molecular Formula
C9H5BrN4
Chinese Name
3-溴-[1,2,4]三唑并[3,4-a]酞嗪
Molecular Weight
249.06700 g/mol
Category
Organohalogen Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point206-208ºC

Frequently Asked Questions

What is the CAS number of 3-bromo-[1,2,4]triazolo[3,4-a]phthalazine?

The CAS number of 3-bromo-[1,2,4]triazolo[3,4-a]phthalazine is 21537-95-1.

What are the molecular formula and molecular weight of 3-bromo-[1,2,4]triazolo[3,4-a]phthalazine?

3-bromo-[1,2,4]triazolo[3,4-a]phthalazine has molecular formula C9H5BrN4 and molecular weight 249.06700 g/mol.

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

Last updated:

How to cite: Jingsj. "3-bromo-[1,2,4]triazolo[3,4-a]phthalazine (CAS 21537-95-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1351353-1 (accessed 2026-10-25).

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