Ethinylestradiol EP Impurity K CAS 155683-61-7
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 155683-61-7 |
| Molecular Formula | C21H26O2 |
| Molecular Weight | 310.43 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Ethinylestradiol EP Impurity K (CAS 155683-61-7) is a pharmacopoeial impurity standards certified reference material from CATO. Molecular formula: C21H26O2. Molecular weight: 310.43 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C21H26O2 |
| Molecular Weight | 310.43 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.) | 2001 |
Related Ethinylestradiol Standards
- Ethinylestradiol 1-Hydroxy 4-Methyl Impurity (CAS 1034298-00-4)
- Ethinylestradiol EP Impurity J (CAS 15071-66-6)
- Ethinylestradiol EP Impurity M (CAS 3240-39-9)
- Ethinylestradiol EP Impurity G (CAS 38002-18-5)
- Ethinylestradiol EP Impurity H (CAS 1350468-76-6)
- Ethinylestradiol EP Impurity F (CAS 56324-28-8)
- Ethinylestradiol EP Impurity E (6-alpha-Hydroxy Ethynylestradiol) (CAS 27521-34-2)
- Ethinylestradiol 2-Hydroxy Impurity (CAS 50394-89-3)
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Why CATO?
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