Estriol EP Impurity E CAS 1228-72-4
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 1228-72-4 |
| Molecular Formula | C18H24O3 |
| Molecular Weight | 288.38 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Order Estriol EP Impurity E (CAS 1228-72-4) pharmacopoeial impurity standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C18H24O3. Molecular weight: 288.38 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C18H24O3 |
| Molecular Weight | 288.38 g/mol |
| Appearance | Off-white to pale 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Estriol Standards
Recommended Standards
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- Elacestrant Impurity 7 (CAS CATO-C4X-32327)
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- Rac1 Inhibitor F56, control peptide (CAS 1315378-77-8)
Why CATO?
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