Levonorgestrel Impurity 34 CAS CATO-C4X-167734
| CAS No. | CATO-C4X-167734 |
| Molecular Formula | C19H24O2 |
| Molecular Weight | 284.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Levonorgestrel Impurity 34.
CATO supplies Levonorgestrel Impurity 34 (CAS CATO-C4X-167734), a pharmacopoeial impurity reference standard (molecular formula C19H24O2, MW 284.39 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Levonorgestrel Impurity 34 (C19H24O2) 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 284.39 g/mol, it falls into the medium-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.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C19H24O2 |
| Molecular Weight | 284.39 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light |
| 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 EP Impurity L (CAS 21800-83-9)
- Levonorgestrel EP Impurity N (CAS 4222-96-2)
- Levonorgestrel Impurity 35 (CAS 300542-76-1)
- Levonorgestrel EP Impurity K (CAS 793-55-5)
- Levonorgestrel Impurity N1 (CAS 7443-72-3)
- Levonorgestrel Impurity 4 (Ethylmetrienone) (CAS 848-04-4)
- Levonorgestrel EP Impurity D (CAS 32419-58-2)
- Levonorgestrel EP Impurity R (CAS 2322-77-2)
Recommended Standards
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