Palbociclib isethionate - ≥98% , CAS No.827022-33-3

CAS: 827022-33-3 Cat. No.: E129978 Molecular Weight: 573.66 EC Number: 804-556-2
AVAILABLE TO ORDER
GRADE & PURITY ≥98%
Synonyms
tert-butoxycarbonyl homopiperazine | 6-acetyl-8-cyclopentyl-5-methyl-2-((5-(piperazin-1-yl)pyridin-2-yl)amino)pyrido[2,3-d]pyrimidin-7(8H)-one 2-hydroxyethanesulfonate | SCHEMBL9885062 | Palbociclib (PD0332991) Isethionate | 827022-33-3 (isethionate) | PS
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
25mg
E129978-25mg
2
$62.90
100mg
E129978-100mg
3
$158.90
500mg
E129978-500mg
2
$521.90
Enter a quantity for the sizes you want to add.
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Why this grade

≥98% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Store at -20°C Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.

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Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

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Literature proof

Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Palbociclib (PD0332991) Isethionate is a highly selective inhibitor of CDK4/6 with IC50 of 11 nM/16 nM. It shows no activity against CDK1/2/5, EGFR, FGFR, PDGFR, InsR, etc. Phase 3.

Specifications

Synonyms
tert-butoxycarbonyl homopiperazine | 6-acetyl-8-cyclopentyl-5-methyl-2-((5-(piperazin-1-yl)pyridin-2-yl)amino)pyrido[2, 3-d]pyrimidin-7(8H)-one 2-hydroxyethanesulfonate | SCHEMBL9885062 | Palbociclib (PD0332991) Isethionate | 827022-33-3 (isethionate) | PS
Specifications & Purity
≥98%
Biochemical and Physiological Mechanisms
PD 0332991 is a potent selective inhibitor of cyclin dependent kinases CDK4 and CDK6 with in vitro IC50 = 11 nM (CDK4) and 16 nM (CDK6). PD 0332991 induces G1 arrest in retinoblastoma (Rb)-positive tumor cells. PD 0332991 might act as a chemsensitizer. It
Legal Information
Sold for only research purposes
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
This product requires cold chain shipping. Ground and other economy services are not available.
Note
Toxic, refer to SDS for further information. Need more advice on solubility, usage and handling? Please visit our frequently asked questions (FAQ) page for more details.
Purity
≥98%
Names and Identifiers
Pubchem Sid504766472
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504766472
Canonical SmilesCC1=C(C(=O)N(C2=NC(=NC=C12)NC3=NC=C(C=C3)N4CCNCC4)C5CCCC5)C(=O)C.C(CS(=O)(=O)O)O
IUPAC Name6-acetyl-8-cyclopentyl-5-methyl-2-[(5-piperazin-1-ylpyridin-2-yl)amino]pyrido[2,3-d]pyrimidin-7-one;2-hydroxyethanesulfonic acid
InChIKeyLYYVFHRFIJKPOV-UHFFFAOYSA-N
INCHI1S/C24H29N7O2.C2H6O4S/c1-15-19-14-27-24(28-20-8-7-18(13-26-20)30-11-9-25-10-12-30)29-22(19)31(17-5-3-4-6-17)23(33)21(15)16(2)32;3-1-2-7(4,5)6/h7-8,13-14,17,25H,3-6,9-12H2,1-2H3,(H,26,27,28,29);3H,1-2H2,(H,4,5,6)
Isomeric SMILES CC1=C(C(=O)N(C2=NC(=NC=C12)NC3=NC=C(C=C3)N4CCNCC4)C5CCCC5)C(=O)C.C(CS(=O)(=O)O)O
WGK Germany 3
Molecular Weight 573.66
Reaxy-Rn 13079983
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=13079983&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

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✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

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📊 Datasheet

Quick-reference summary of product specifications and applications.

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🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

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Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassDiazinanes
SubclassPiperazines
Intermediate Tree Nodes Not available
Direct ParentPyridinylpiperazines
Alternative Parents N-arylpiperazines  Pyrido[2,3-d]pyrimidines  Dialkylarylamines  Aryl alkyl ketones  Pyridinones  Aminopyridines and derivatives  Methylpyridines  Aminopyrimidines and derivatives  Imidolactams  Vinylogous amides  Sulfonyls  Alkanesulfonic acids  Organosulfonic acids  Heteroaromatic compounds  Lactams  Dialkylamines  Azacyclic compounds  Hydrocarbon derivatives  Primary alcohols  Organic oxides  
Molecular FrameworkNot available
Substituents Pyridinylpiperazine - N-arylpiperazine - Pyrido[2,3-d]pyrimidine - Pyridopyrimidine - Dialkylarylamine - Aryl alkyl ketone - Aryl ketone - Tertiary aliphatic/aromatic amine - Aminopyridine - Aminopyrimidine - Methylpyridine - Pyridinone - Pyridine - Pyrimidine - Imidolactam - Heteroaromatic compound - Vinylogous amide - Organic sulfonic acid or derivatives - Organosulfonic acid or derivatives - Organosulfonic acid - Sulfonyl - Alkanesulfonic acid - Tertiary amine - Ketone - Lactam - Azacycle - Secondary aliphatic amine - Secondary amine - Amine - Organosulfur compound - Organooxygen compound - Organonitrogen compound - Primary alcohol - Organic oxide - Organic nitrogen compound - Organic oxygen compound - Hydrocarbon derivative - Alcohol - Aromatic heteropolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as pyridinylpiperazines. These are compounds containing a pyridinylpiperazine skeleton, which consists of a pyridine linked (not fused) to a piperazine by a bond by a single bond that is not part of a ring.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

3 results found

Lot NumberCertificate TypeDateItem
G2221130Certificate of AnalysisMay 09, 2026 E129978
G2221131Certificate of AnalysisMay 09, 2026 E129978
E2014001Certificate of AnalysisFeb 20, 2024 E129978
Chemical and Physical Properties
SolubilityDMSO <1 mg/mL (<1 mM); Water 50 mg/mL heating (87.15 mM); Ethanol <1 mg/mL (<1 mM)
Molecular Weight573.700 g/mol
XLogP3
Hydrogen Bond Donor Count4
Hydrogen Bond Acceptor Count12
Rotatable Bond Count7
Exact Mass573.237 Da
Monoisotopic Mass573.237 Da
Topological Polar Surface Area186.000 Ų
Heavy Atom Count40
Formal Charge0
Complexity892.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count2
Solution Calculators
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