Levonorgestrel Impurity 41 CAS CATO-C4X-167741
| CAS No. | CATO-C4X-167741 |
| Molecular Formula | C21H28O3 |
| Molecular Weight | 328.45 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 328.45 g/mol gives Levonorgestrel Impurity 41 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Levonorgestrel Impurity 41 (CAS CATO-C4X-167741, C21H28O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Levonorgestrel Impurity 41 (C21H28O3) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 328.45 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), Levonorgestrel Impurity 41 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 | C21H28O3 |
| Molecular Weight | 328.45 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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 |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Levonorgestrel Standards
- Levonorgestrel Impurity 40 (10R) (CAS CATO-C4X-167740)
- Levonorgestrel EP Impurity G (CAS 87585-03-3)
- Levonorgestrel EP Impurity H (CAS 55555-97-0)
- Levonorgestrel EP Impurity I (CAS 21508-50-9)
- Levonorgestrel EP Impurity I (CAS 20402-62-4)
- Levonorgestrel EP Impurity S (CAS 176254-10-7)
- Levonorgestrel EP Impurity T (CAS 14507-51-8)
- Levonorgestrel EP Impurity T (CAS 799-43-9)
Recommended Standards
- Estradiol Impurity 20 (CAS 2398-63-2)
- Cyproterone Impurity 4 (CAS 2477-61-4)
- Progesterone Impurity 78 (CAS CATO-C4X-150278)
- Estrone Impurity 11 (CAS CATO-C4X-210511)
- Procaterol Impurity 38 (CAS CATO-C4X-181038)
- Elobixibat Impurity 45 (CAS 439087-68-0)
- Alprazolam Impurity 9 (CAS 17387-32-5)
- Methyl 2-(4-(benzyloxy)-5-methoxy-2-nitrobenzoyl)isoindoline-1-carboxylate (CAS 1447605-96-0)
- (2R,3S,5R)-5-(2,6-Dichloro-9H-purin-9-yl)-2-(((4-methylbenzoyl)oxy)methyl)tetrahydrofuran-3-yl 4-methylbenzoate 38925-80-3 (CAS 38925-80-3)
- tert-Butyl 2-(4-chlorophenyl)-2-oxoacetate (CAS 75716-85-7)
- Ethyl 2-((3-hydroxypiperidin-1-yl)methyl)furan-3-carboxylate (CAS 1252434-71-1)
- 7-Methylquinolin-4(1H)-one (CAS 93919-55-2)
- Estrone Impurity 8 (CAS CATO-C4X-21058)
- Insulin Degludec Impurity 8 (CAS CATO-C4X-21578)
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