![Molecular structure of 8-Cyclopentyl-5-methyl-2-[[5-(1-piperazinyl)-2-pyridinyl]amino]pyrido[2,3-d]pyrimidin-7(8H)-one (CAS 571190-22-2)](/images/chem_structures_svg/329/571190-22-2.svg)
8-Cyclopentyl-5-methyl-2-[[5-(1-piperazinyl)-2-pyridinyl]amino]pyrido[2,3-d]pyrimidin-7(8H)-one
Also known as: 8-Cyclopentyl-5-methyl-2-((5-(piperazin-1-yl)pyridin-2-yl)amino)pyrido[2,3-d]pyrimidin-7(8H)-one, 8-Cyclopentyl-5-methyl-2-{[5-(piperazin-1-yl)pyridin-2-yl]amino}pyrido[2,3-d]pyrimidin-7(8H)-one, Palbociclib impurity 1, Palbociclib impurity C, 6-Desacetyl Palbociclib, Pyrido[2,3-d]pyrimidin-7(8H)-one, 8-cyclopentyl-5-methyl-2-[[5-(1-piperazinyl)-2-pyridinyl]amino]-
8-Cyclopentyl-5-methyl-2-[[5-(1-piperazinyl)-2-pyridinyl]amino]pyrido[2,3-d]pyrimidin-7(8H)-one (CAS 571190-22-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C22H27N7O and a molecular weight of 405.496 g/mol. Key properties include a boiling point of 651.3±65.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 347.7±34.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 571190-22-2
- Jingsj CID
- J-1713852-7
- Molecular Formula
- C22H27N7O
- Molecular Weight
- 405.496 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 651.3±65.0 °C at 760 mmHg |
|---|---|
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 347.7±34.3 °C |
| Exact Mass | 405.227722 |
| LogP | 1.45 |
| Vapor Pressure | 0.0±2.0 mmHg at 25°C |
| Refractive Index | 1.658 |
Frequently Asked Questions
What is the CAS number of 8-Cyclopentyl-5-methyl-2-[[5-(1-piperazinyl)-2-pyridinyl]amino]pyrido[2,3-d]pyrimidin-7(8H)-one?
The CAS number of 8-Cyclopentyl-5-methyl-2-[[5-(1-piperazinyl)-2-pyridinyl]amino]pyrido[2,3-d]pyrimidin-7(8H)-one is 571190-22-2.
What are the molecular formula and molecular weight of 8-Cyclopentyl-5-methyl-2-[[5-(1-piperazinyl)-2-pyridinyl]amino]pyrido[2,3-d]pyrimidin-7(8H)-one?
8-Cyclopentyl-5-methyl-2-[[5-(1-piperazinyl)-2-pyridinyl]amino]pyrido[2,3-d]pyrimidin-7(8H)-one has molecular formula C22H27N7O and molecular weight 405.496 g/mol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "8-Cyclopentyl-5-methyl-2-[[5-(1-piperazinyl)-2-pyridinyl]amino]pyrido[2,3-d]pyrimidin-7(8H)-one (CAS 571190-22-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1713852-7 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.