Dienogest EP Impurity D CAS 190662-30-7
| CAS No. | 190662-30-7 |
| Molecular Formula | C22H29NO3 |
| Molecular Weight | 355.47 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Dienogest EP Impurity D (CAS 190662-30-7) is a certified pharmaceutical impurity reference standard with the molecular formula C22H29NO3 and a molecular weight of 355.47 g/mol.
Based on its molecular formula C22H29NO3, Dienogest EP Impurity D contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 355.47 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.
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), Dienogest EP Impurity D 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 | C22H29NO3 |
| Molecular Weight | 355.47 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2011 |
| Nitrogen Atoms | 1 |
Related Dienogest Standards
- Dienogest Impurity 17 (CAS 83196-58-1)
- Dienogest EP Impurity E (CAS 102193-41-9)
- Dienogest EP Impurity K (CAS 106111-43-7)
- Dienogest Impurity 15 (CAS CATO-C4X-229515)
- Dienogest Impurity 20 (CAS 34686-78-9)
- Dienogest EP Impurity A (CAS 86153-39-1)
- Dienogest EP Impurity J (CAS 24284-84-2)
- Dienogest EP Impurity M (CAS 98149-13-4)
Recommended Standards
- Phenylephrine Impurity 28(Mixture of Diastereomers) (CAS CATO-C4X-146728)
- Denaverine Impurity 3 (CAS 4348-15-6)
- Bisoprolol EP Impurity G (CAS 1215342-36-1)
- (E)-9-ethyl-3-((2-ethyl-2-(o-tolyl)hydrazono)methyl)-9H-carbazole (CAS 1274948-12-7)
- Capivasertib Impurity 8 (CAS CATO-C4X-33128)
- Peramivir Impurity 44 (CAS CATO-C4X-183344)
- Lurbinectedin Impurity 12 (CAS CATO-C4X-311412)
- 1-(2-Aminoethyl)-2-ethylcyclohexan-1-ol (CAS 1502347-75-2)
- 5-Methyl-6-methylsulfanyl-nicotinic acid (CAS 1355226-55-9)
- tert-Butyl 4-(6-formylpyrazolo[1,5-a]pyrimidin-2-yl)piperidine-1-carboxylate (CAS 1258638-43-5)
- 3-(6-Amino-1-oxo-isoindolin-2-yl)piperidine-2,6-dione (CAS 191732-74-8)
- (6-ethoxy-1,3-benzothiazol-2-yl)urea (CAS 99056-23-2)
- 2,2,2-Trifluoro-1-(4-(methoxymethyl)phenyl)ethan-1-ol (CAS 1486659-01-1)
- Semaglutide Impurity 164 (CAS CATO-C4X-2226164)
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