Progesterone Impurity 81 CAS CATO-C4X-150281
| CAS No. | CATO-C4X-150281 |
| Molecular Formula | C22H32O3 |
| Molecular Weight | 344.49 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 Progesterone Impurity 81.
Progesterone Impurity 81 (CAS CATO-C4X-150281) is a certified pharmaceutical impurity reference standard with the molecular formula C22H32O3 and a molecular weight of 344.49 g/mol.
Based on its molecular formula C22H32O3, Progesterone Impurity 81 contains a steroid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 344.49 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), Progesterone Impurity 81 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 | C22H32O3 |
| Molecular Weight | 344.49 g/mol |
| Appearance | Off-white to pale 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Progesterone Standards
- Progesterone Impurity N3 (CAS 5327-60-6)
- Progesterone Impurity 46 (CAS CATO-C4X-150246)
- Progesterone Impurity 52 (CAS 14508-05-5)
- Progesterone Impurity 65 (CAS CATO-C4X-150265)
- Progesterone Impurity 69 (CAS CATO-C4X-150269)
- Progesterone Impurity 85 (CAS 151122-70-2)
- Progesterone Impurity N38 (CAS 70081-51-5)
- Progesterone Impurity 62 (CAS 87421-42-9)
Recommended Standards
- Levonorgestrel EP Impurity O (CAS 155683-60-6)
- Bempedoic Acid (CAS 738606-46-7)
- Testosterone Impurity 50 (CAS 58769-88-3)
- Medroxyprogesterone Acetate EP Impurity I (CAS CATO-C4X-14573)
- Mirabegron Impurity 68 (CAS CATO-C4X-103268)
- Vonoprazan Impurity 291 (CAS CATO-C4X-1020291)
- Ertugliflozin impurity 44 (CAS CATO-C4X-301144)
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