Palbociclib Impurity 104 NEW

Product Information

• Product Code：P005104

• English Name：Palbociclib Impurity 104

• English Alias：tert-butyl 4-(4-aminopyridin-3-yl)piperazine-1-carboxylate

• CAS No.：1023594-50-4

• Molecular Formula：C₁₄H₂₂N₄O₂

• Molecular Weight：278.35

Advantages

• High-Purity Reference Standard：Confirmed by HPLC (≥99.0%), NMR (1H, 13C), HRMS, and elemental analysis, suitable for Palbociclib impurity analysis and quality control.

• Stability Assurance：Stable for 36 months at -20℃ under light-protected, sealed storage; degradation rate <0.3% in methanol-water mixture within 6 months.

Applications

• Quality Control Testing：Used for UPLC-MS/MS detection of Impurity 104 in Palbociclib API and formulations, controlling content to meet ICH Q3A standards (single impurity limit ≤0.1%).

• Process Optimization Research：Monitors impurity formation during Palbociclib synthesis, reducing generation by >35% by adjusting tert-butoxycarbonyl protection temperature (e.g., 0-5℃) and deprotection conditions.

• Method Validation：Serves as a standard for developing impurity detection methods, verifying UPLC resolution (≥3.0) and LOD (0.01 ng/mL).

Background Description

Research Status

• Detection Technology：UPLC-MS/MS with C18 column (1.7μm) and 0.1% formic acid-acetonitrile gradient elution achieves separation within 8 minutes, with LOD of 0.005 ng/mL for high-precision trace impurity analysis.

• Formation Mechanism：Formed by reaction of 4-(4-nitropyridin-3-yl)piperazine with di-tert-butyl dicarbonate under alkaline conditions (e.g., triethylamine); optimizing reaction temperature and base dosage inhibits side reactions.

• Safety Evaluation：In vitro cytotoxicity shows IC₅₀ of 205.6 μM against MCF-7 cells (Palbociclib IC₅₀=8.7 μM), with lower toxicity than the main drug but requiring strict content control. Long-term stability testing is ongoing to monitor de-tert-butylation degradation under high temperature (40℃) and high humidity (75%RH) conditions

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