ethyl 4-methyl-5-oxo-4,5-dihydro[1,2,3]triazolo[1,5-a]quinazoline-3-carboxylate

4-甲基-5-氧代-4,5-二氢[1,2,3]三唑并[1,5-a]喹唑啉-3-羧酸乙酯

Also known as: ethyl 4-methyl-5-oxotriazolo[1,5-a]quinazoline-3-carboxylate, HMS1526K15, HMS2796G12, [1,2,3]Triazolo[1,5-a]quinazoline-3-carboxylic acid, 4,5-dihydro-4-methyl-5-oxo-, ethyl ester

ethyl 4-methyl-5-oxo-4,5-dihydro[1,2,3]triazolo[1,5-a]quinazoline-3-carboxylate (CAS 176692-55-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C13H12N4O3 and a molecular weight of 272.25900 g/mol. It is also known as ethyl 4-methyl-5-oxotriazolo[1,5-a]quinazoline-3-carboxylate, HMS1526K15 and HMS2796G12. Key properties include a melting point of 149ºC, a boiling point of 502.2ºC at 760 mmHg, a density of 1.45g/cm3 and a flash point of 257.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
176692-55-0
Jingsj CID
J-1411712-7
Molecular Formula
C13H12N4O3
Chinese Name
4-甲基-5-氧代-4,5-二氢[1,2,3]三唑并[1,5-a]喹唑啉-3-羧酸乙酯
Molecular Weight
272.25900 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point149ºC
Boiling Point502.2ºC at 760 mmHg
Density1.45g/cm3
Flash Point257.5ºC

Frequently Asked Questions

What is the CAS number of ethyl 4-methyl-5-oxo-4,5-dihydro[1,2,3]triazolo[1,5-a]quinazoline-3-carboxylate?

The CAS number of ethyl 4-methyl-5-oxo-4,5-dihydro[1,2,3]triazolo[1,5-a]quinazoline-3-carboxylate is 176692-55-0.

What are the molecular formula and molecular weight of ethyl 4-methyl-5-oxo-4,5-dihydro[1,2,3]triazolo[1,5-a]quinazoline-3-carboxylate?

ethyl 4-methyl-5-oxo-4,5-dihydro[1,2,3]triazolo[1,5-a]quinazoline-3-carboxylate has molecular formula C13H12N4O3 and molecular weight 272.25900 g/mol.

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

Last updated:

How to cite: Jingsj. "ethyl 4-methyl-5-oxo-4,5-dihydro[1,2,3]triazolo[1,5-a]quinazoline-3-carboxylate (CAS 176692-55-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1411712-7 (accessed 2026-10-25).

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