Palbociclib Impurity 29
[CAS# 571191-15-6]

Identification

• Name: Palbociclib Impurity 29
• Synonyms: Palbociclib metabolite M4; 6-acetyl-2-[[5-(2-aminoethylamino)pyridin-2-yl]amino]-8-cyclopentyl-5-methylpyrido[2,3-d]pyrimidin-7-one
• Molecular Formula: C₂₂H₂₇N₇O₂
• Molecular Weight: 421.50
• CAS Registry Number: 571191-15-6
• SMILES: CC1=C(C(=O)N(C2=NC(=NC=C12)NC3=NC=C(C=C3)NCCN)C4CCCC4)C(=O)C

Properties

• Density: 1.3±0.1 g/cm³, Calc.^*
• Index of Refraction: 1.677, Calc.^*
• Boiling Point: 643.5±55.0 °C (760 mmHg), Calc.^*
• Flash Point: 343.0±31.5 °C, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software.