Progesterone Impurity 83 CAS CATO-C4X-150283
| CAS No. | CATO-C4X-150283 |
| Molecular Formula | C21H30O3 |
| Molecular Weight | 330.46 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
As a process- or degradation-related impurity, Progesterone Impurity 83 (CAS CATO-C4X-150283, C21H30O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C21H30O3, Progesterone Impurity 83 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 330.46 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).
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.
Physical & Chemical Properties
| Molecular Formula | C21H30O3 |
| Molecular Weight | 330.46 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 19 (CAS 16031-66-6)
- Progesterone Impurity 9 (CAS 641-80-5)
- Progesterone Impurity 15 (CAS 604-20-6)
- Progesterone Impurity 16 (CAS 604-19-3)
- Progesterone Impurity N2 (CAS 40736-33-2)
- Progesterone Impurity 34 (CAS 60966-36-1)
- Progesterone Impurity 84 (CAS 66512-11-6)
- (20R)-Progesterone EP Impurity I (CAS 66289-21-2)
Recommended Standards
- 17β-Hydroxyprogesterone (CAS 604-09-1)
- Estriol impurity 22 (CAS 69227-81-2)
- Peramivir Impurity 67 (CAS CATO-C4X-183367)
- Testosterone EP Impurity E (CAS 1045-69-8)
- Rifampicin Impurity 14 (CAS CATO-C4X-145614)
- Alvimopan impurity 19 (CAS CATO-C4X-114519)
- Nebivolol Impurity 79 (CAS CATO-C4X-196879)
- (2,4,5-Trimethoxy-3-methylphenyl)methanol (CAS 137023-15-5)
- (2-Chloro-4-iodophenyl)hydrazine hydrochloride (CAS 1219606-21-9)
- (4-(2,4-dimethylphenyl)(2,5-thiazolyl))phenylamine (CAS 321980-75-0)
- Ethylene Glycol Dibenzoate (CAS 94-49-5)
- 2-Fluoro-N-(4-fluoro-3-methylphenyl)benzamide (CAS 294849-23-3)
- 2-(3-Amino-4-bromo-1h-pyrazol-1-yl)butanoic acid (CAS 1339700-88-7)
- Semaglutide impurity 83 (CAS CATO-C4X-222683)
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