3-nitropyrazolo[1,5-a]pyrimidin-5(4H)-one
3-硝基吡唑并[1,5-a]嘧啶-5(4H)-酮
Also known as: 3-nitro-4H-pyrazolo[1,5-a]pyrimidin-5-one, 3-nitro-4H,5H-pyrazolo[1,5-a]pyrimidin-5-one, Pyrazolo[1,5-a]pyrimidin-5(4H)-one, 3-nitro-
3-nitropyrazolo[1,5-a]pyrimidin-5(4H)-one (CAS 1919868-75-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H4N4O3 and a molecular weight of 180.121 g/mol. It is also known as 3-nitro-4H-pyrazolo[1,5-a]pyrimidin-5-one, 3-nitro-4H,5H-pyrazolo[1,5-a]pyrimidin-5-one and Pyrazolo[1,5-a]pyrimidin-5(4H)-one, 3-nitro-. Key properties include a boiling point of 303.4±42.0 °C at 760 mmHg, a density of 1.9±0.1 g/cm3 and a flash point of 137.3±27.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1919868-75-9
- Jingsj CID
- J-1417999-0
- Molecular Formula
- C6H4N4O3
- Chinese Name
- 3-硝基吡唑并[1,5-a]嘧啶-5(4H)-酮
- Molecular Weight
- 180.121 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 303.4±42.0 °C at 760 mmHg |
|---|---|
| Density | 1.9±0.1 g/cm3 |
| Flash Point | 137.3±27.9 °C |
Frequently Asked Questions
What is the CAS number of 3-nitropyrazolo[1,5-a]pyrimidin-5(4H)-one?
The CAS number of 3-nitropyrazolo[1,5-a]pyrimidin-5(4H)-one is 1919868-75-9.
What are the molecular formula and molecular weight of 3-nitropyrazolo[1,5-a]pyrimidin-5(4H)-one?
3-nitropyrazolo[1,5-a]pyrimidin-5(4H)-one has molecular formula C6H4N4O3 and molecular weight 180.121 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-nitropyrazolo[1,5-a]pyrimidin-5(4H)-one (CAS 1919868-75-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1417999-0 (accessed 2026-10-26).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.