Pyrimido[5,4-e]-1,2,4-triazine (9CI)
(9CI)-嘧啶并[5,4-e]-1,2,4-三嗪
Also known as: 7-Azapteridine, pyrimido[5,4-e]-1,2,4-triazine, pyrimido[5,4-e][1,2,4]triazine
Pyrimido[5,4-e]-1,2,4-triazine (9CI) (CAS 254-99-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H3N5 and a molecular weight of 133.11100 g/mol. It is also known as 7-Azapteridine, pyrimido[5,4-e]-1,2,4-triazine and pyrimido[5,4-e][1,2,4]triazine. Key properties include a boiling point of 268.6ºC at 760 mmHg, a density of 1.484g/cm3 and a flash point of 128.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 254-99-9
- Jingsj CID
- J-977606-5
- Molecular Formula
- C5H3N5
- Chinese Name
- (9CI)-嘧啶并[5,4-e]-1,2,4-三嗪
- Molecular Weight
- 133.11100 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 268.6ºC at 760 mmHg |
|---|---|
| Density | 1.484g/cm3 |
| Flash Point | 128.5ºC |
Frequently Asked Questions
What is the CAS number of Pyrimido[5,4-e]-1,2,4-triazine (9CI)?
The CAS number of Pyrimido[5,4-e]-1,2,4-triazine (9CI) is 254-99-9.
What are the molecular formula and molecular weight of Pyrimido[5,4-e]-1,2,4-triazine (9CI)?
Pyrimido[5,4-e]-1,2,4-triazine (9CI) has molecular formula C5H3N5 and molecular weight 133.11100 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Pyrimido[5,4-e]-1,2,4-triazine (9CI) (CAS 254-99-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-977606-5 (accessed 2026-10-24).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.