Dienogest EP Impurity H CAS 16669-06-0
| CAS No. | 16669-06-0 |
| Molecular Formula | C20H25NO2 |
| Molecular Weight | 311.42 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Dienogest EP Impurity H (CAS 16669-06-0), a pharmacopoeial impurity reference standard (molecular formula C20H25NO2, MW 311.42 g/mol) used for the identification and quantification of trace impurities in APIs.
Dienogest EP Impurity H (C20H25NO2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
CATO manufactures Dienogest EP Impurity H under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C20H25NO2 |
| Molecular Weight | 311.42 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 1 |
Related Dienogest Standards
- Dienogest (CAS 65928-58-7)
- 17-epi-Dienogest (CAS CATO-C4X-229516)
- Dienogest EP Impurity C (CAS 106111-42-6)
- Dienogest Impurity 19 (CAS 7291-52-3)
- Dienogest EP Impurity I (CAS 65928-65-6)
- Dienogest EP Impurity F (CAS 67473-36-3)
- Dienogest EP Impurity G (CAS 86153-38-0)
- Dienogest EP Impurity L (CAS 5571-36-8)
Recommended Standards
- Upadacitinib Impurity 136 (CAS CATO-C4X-2405136)
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- Trihexyphenidyl Impurity 16 (CAS 2724762-69-8)
- Nicardipine Impurity N5 (CAS 206976-29-6)
- Pantoprazole Impurity 48 (CAS CATO-C4X-139948)
- Amoxicillin Impurity 34 (CAS CATO-C4X-114834)
- (5-Cyclopropylpyridin-2-yl)methanamine hydrochloride (CAS 2490704-97-5)
- Perospirone Impurity 53 (CAS CATO-C4X-245853)
- 3-(m-Tolyl)furan (CAS 80866-23-5)
- Ethyl (r)-3-amino-3-(furan-3-yl)propanoate (CAS 778571-91-8)
- 1-(3,5-Bis(trifluoromethyl)phenyl)-3-(4-hydroxy-6-(trifluoromethyl)pyrimidin-2-yl)guanidine (CAS 618092-26-5)
- (S)-N,N-Diethylpyrrolidine-2-carboxamide (CAS 41721-01-1)
- Semaglutide impurity 44 (CAS CATO-C4X-222644)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com