Progesterone Impurity 45 CAS CATO-C4X-150245
| CAS No. | CATO-C4X-150245 |
| Molecular Formula | C22H32O2 |
| Molecular Weight | 328.49 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Progesterone Impurity 45 (CAS CATO-C4X-150245) is a certified pharmaceutical impurity reference standard with the molecular formula C22H32O2 and a molecular weight of 328.49 g/mol.
Based on its molecular formula C22H32O2, Progesterone Impurity 45 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 328.49 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
As a certified reference material (CRM), Progesterone Impurity 45 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 | C22H32O2 |
| Molecular Weight | 328.49 g/mol |
| Appearance | Off-white to pale 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Progesterone Standards
- (20R)-Progesterone EP Impurity I (CAS 66289-21-2)
- Progesterone Impurity N5 (CAS 35525-27-0)
- Progesterone Impurity N1(Mixture of Diastereomers) (CAS 71658-22-5)
- Progesterone EP Impurity I (S-isomer) (CAS 3986-89-8)
- Progesterone EP Impurity I (CAS 24254-01-1)
- Progesterone Impurity 43 (CAS CATO-C4X-150243)
- Progesterone Impurity 51 (CAS 103858-15-7)
- Progesterone Impurity 53 (CAS 903-03-7)
Recommended Standards
- Progesterone Impurity 59 (CAS CATO-C4X-150259)
- Spironolactone Impurity 10 (CAS 53866-23-2)
- Progesterone Impurity 60 (CAS CATO-C4X-150260)
- (9-cis,13-cis)-Retinoic Acid Ethyl Ester 86708-68-1 (CAS 86708-68-1)
- Iloperidone Hydroxy Impurity (CAS 133454-55-4)
- Niraparib Impurity N3 (CAS 2244064-26-2)
- Tandospirone N-Oxide Impurity 12 (CAS CATO-C4X-187515)
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