Molecular structure of Ethyl 2-((5-(4-(tert-butoxycarbonyl)piperazin-1-yl)pyridin-2-yl)amino)-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylate (CAS 571189-03-2)

Ethyl 2-((5-(4-(tert-butoxycarbonyl)piperazin-1-yl)pyridin-2-yl)amino)-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylate

Also known as: Palbociclib Impurity 119, Ethyl 2-((5-(4-(tert-butoxycarbonyl)piperazin-1-yl)pyridin-2-yl)amino)-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylate, Pyrido[2,3-d]pyrimidine-6-carboxylic acid, 8-cyclopentyl-2-[[5-[4-[(1,1-dimethylethoxy)carbonyl]-1-piperazinyl]-2-pyridinyl]amino]-7,8-dihydro-5-methyl-7-oxo-, ethyl ester, 8-cyclopentyl-5-methyl-2-[[5-[4-[(2-methylpropan-2-yl)oxycarbonyl]piperazin-1-yl]pyridin-2-yl]amino]-7-oxopyrido[2,3-d]pyrimidine-6-carboxylate

Ethyl 2-((5-(4-(tert-butoxycarbonyl)piperazin-1-yl)pyridin-2-yl)amino)-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylate (CAS 571189-03-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C30H39N7O5 and a molecular weight of 577.67500 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 571189-03-2
Jingsj CID: J-1496484-2
Molecular Formula: C₃₀H₃₉N₇O₅
Molecular Weight: 577.67500 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Exact Mass	577.30100
PSA	131.78000
LogP	4.66330

Frequently Asked Questions

What is the CAS number of Ethyl 2-((5-(4-(tert-butoxycarbonyl)piperazin-1-yl)pyridin-2-yl)amino)-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylate?

The CAS number of Ethyl 2-((5-(4-(tert-butoxycarbonyl)piperazin-1-yl)pyridin-2-yl)amino)-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylate is 571189-03-2.

What are the molecular formula and molecular weight of Ethyl 2-((5-(4-(tert-butoxycarbonyl)piperazin-1-yl)pyridin-2-yl)amino)-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylate?

Ethyl 2-((5-(4-(tert-butoxycarbonyl)piperazin-1-yl)pyridin-2-yl)amino)-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylate has molecular formula C30H39N7O5 and molecular weight 577.67500 g/mol.

What are the upstream and downstream products of Ethyl 2-((5-(4-(tert-butoxycarbonyl)piperazin-1-yl)pyridin-2-yl)amino)-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylate?

For Ethyl 2-((5-(4-(tert-butoxycarbonyl)piperazin-1-yl)pyridin-2-yl)amino)-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylate, Upstream Products: tert-Butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate, 1-(6-Nitropyridin-3-yl)piperazine, tert-butyl 4-(6-nitropyridin-3-yl)piperazine-1-carboxylate.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Ethyl 2-((5-(4-(tert-butoxycarbonyl)piperazin-1-yl)pyridin-2-yl)amino)-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylate (CAS 571189-03-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1496484-2 (accessed 2026-11-09).

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