7-Hydroxy-5-methyl[1,2,4]triazolo[1,5-a]pyrimidine

7-羟基-5-甲基[1,2,4]三唑并[1,5-a]嘧啶

Also known as: 5-Methyl-[1,2,4]triazolo[1,5-a]pyrimidin-7-ol, 7-Hydroxy-5-methyl-1,3,4-triazaindolizine, 5-Methyl-7-hydroxy-1,3,4-triazaindolizine, Triazaindolizine, 5-Methyl-s-triazolo[1,5-a]pyrimidin-7-ol, 4-Hydroxy-6-methyl-1,3,3a,7-tetraazaindene, Methyl hydroxytriazaindolizine, Trapidil intermediate product

7-Hydroxy-5-methyl[1,2,4]triazolo[1,5-a]pyrimidine (CAS 2503-56-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H6N4O and a molecular weight of 150.13800 g/mol. It is also known as 5-Methyl-[1,2,4]triazolo[1,5-a]pyrimidin-7-ol, 7-Hydroxy-5-methyl-1,3,4-triazaindolizine and 5-Methyl-7-hydroxy-1,3,4-triazaindolizine. Key properties include a melting point of 280-283 °C(lit.) and a density of 1.424g/cm3. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
2503-56-2
Jingsj CID
J-3683-0
Molecular Formula
C6H6N4O
Chinese Name
7-羟基-5-甲基[1,2,4]三唑并[1,5-a]嘧啶
Molecular Weight
150.13800 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point280-283 °C(lit.)
Density1.424g/cm3

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 7-Hydroxy-5-methyl[1,2,4]triazolo[1,5-a]pyrimidine?

The CAS number of 7-Hydroxy-5-methyl[1,2,4]triazolo[1,5-a]pyrimidine is 2503-56-2.

What are the molecular formula and molecular weight of 7-Hydroxy-5-methyl[1,2,4]triazolo[1,5-a]pyrimidine?

7-Hydroxy-5-methyl[1,2,4]triazolo[1,5-a]pyrimidine has molecular formula C6H6N4O and molecular weight 150.13800 g/mol.

Is 7-Hydroxy-5-methyl[1,2,4]triazolo[1,5-a]pyrimidine hazardous?

7-Hydroxy-5-methyl[1,2,4]triazolo[1,5-a]pyrimidine has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "7-Hydroxy-5-methyl[1,2,4]triazolo[1,5-a]pyrimidine (CAS 2503-56-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-3683-0 (accessed 2026-10-23).

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