Levonorgestrel Impurity 40 (10R) CAS CATO-C4X-167740
| CAS No. | CATO-C4X-167740 |
| Molecular Formula | C21H28O3 |
| Molecular Weight | 328.45 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Levonorgestrel Impurity 40 (10R) is closely related to a steroid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
As a process- or degradation-related impurity, Levonorgestrel Impurity 40 (10R) (CAS CATO-C4X-167740, C21H28O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Levonorgestrel Impurity 40 (10R) (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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a certified reference material (CRM), Levonorgestrel Impurity 40 (10R) 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 41 (CAS CATO-C4X-167741)
- 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)
- Progesterone Impurity 42 (CAS 1173998-80-5)
- Erlotinib Impurity 70 (CAS CATO-C4X-106970)
- Ticagrelor Impurity 3 (CAS 2096989-56-7)
- Prednisolone Impurity 35 (CAS CATO-C4X-173735)
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- 1-[(6-Chloropyridin-3-yl)methyl]piperidin-2-one (CAS 120868-72-6)
- 4-Phenoxy-2-phenylbutan-1-amine (CAS 1198278-13-5)
- Q-Peptide trifluoroacetate salt (CAS 1361235-89-3)
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