Pitavastatin Impurity 4 CAS 141750-63-2
| CAS No. | 141750-63-2 |
| Molecular Formula | C25H22FNO3 |
| Molecular Weight | 403.45 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, Pitavastatin Impurity 4 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 403.45 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a process- or degradation-related impurity, Pitavastatin Impurity 4 (CAS 141750-63-2, C25H22FNO3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Pitavastatin Impurity 4 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C25H22FNO3 |
| Molecular Weight | 403.45 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Pitavastatin Standards
- Pitavastatin Impurity 15 (CAS CATO-C4X-103715)
- Pitavastatin Impurity 74 (CAS CATO-C4X-103774)
- Pitavastatin Impurity 114 (CAS CATO-C4X-1037114)
- Pitavastatin Impurity 136 (CAS 1611991-87-7)
- Pitavastatin Impurity 111 (CAS CATO-C4X-1037111)
- Pitavastatin Impurity 108 (CAS CATO-C4X-1037108)
- Pitavastatin Impurity 121 (CAS 1809100-36-4)
- Pitavastatin Impurity 88 (CAS 222306-15-2)
Recommended Standards
- Apremilast Impurity 54 (CAS CATO-C4X-100954)
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- Levofloxacin Impurity 46 (CAS CATO-C4X-137146)
- Clonazepam Impurity 4 (CAS 52130-87-7)
- Linaprazan Impurity 12 (CAS 403668-98-4)
- Salbutamol Impurity 53 (CAS 54208-72-9)
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