Pyrazolo[1,5-a]pyrimidin-7(4H)-one
吡唑并[1,5-a]嘧啶-7(4H)-酮
Also known as: 4H-Pyrazolo[1,5-a]pyrimidin-7-one, 4,7-dihydropyrazolo[1,5-a]pyrimidin-7-one, 4H,7H-pyrazolo[1,5-a]pyrimidin-7-one
Pyrazolo[1,5-a]pyrimidin-7(4H)-one (CAS 29274-23-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H5N3O and a molecular weight of 135.12300 g/mol. It is also known as 4H-Pyrazolo[1,5-a]pyrimidin-7-one, 4,7-dihydropyrazolo[1,5-a]pyrimidin-7-one and 4H,7H-pyrazolo[1,5-a]pyrimidin-7-one. Key properties include a boiling point of 297.644ºC at 760 mmHg, a density of 1.511g/cm3 and a flash point of 133.811ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 29274-23-5
- Jingsj CID
- J-1499668-3
- Molecular Formula
- C6H5N3O
- Chinese Name
- 吡唑并[1,5-a]嘧啶-7(4H)-酮
- Molecular Weight
- 135.12300 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 297.644ºC at 760 mmHg |
|---|---|
| Density | 1.511g/cm3 |
| Flash Point | 133.811ºC |
Frequently Asked Questions
What is the CAS number of Pyrazolo[1,5-a]pyrimidin-7(4H)-one?
The CAS number of Pyrazolo[1,5-a]pyrimidin-7(4H)-one is 29274-23-5.
What are the molecular formula and molecular weight of Pyrazolo[1,5-a]pyrimidin-7(4H)-one?
Pyrazolo[1,5-a]pyrimidin-7(4H)-one has molecular formula C6H5N3O and molecular weight 135.12300 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Pyrazolo[1,5-a]pyrimidin-7(4H)-one (CAS 29274-23-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1499668-3 (accessed 2026-10-24).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.