Estradiol Impurity 7 CAS 7291-41-0
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 7291-41-0 |
| Molecular Formula | C18H22O2 |
| Molecular Weight | 270.37 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Estradiol Impurity 7 (CAS 7291-41-0) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C18H22O2. Molecular weight: 270.37 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C18H22O2 |
| Molecular Weight | 270.37 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
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Recommended Standards
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- 2-[(4-methoxyphenyl)methyl]-1,1-dioxo-1,2,5-thiadiazolidin-3-one (CAS 612530-85-5)
- Diethyl (1H,1H,2H,2H-heptadecafluorodec-1-yl)phosphonate (CAS 90146-96-6)
- Semaglutide Impurity 128 (CAS 2490269-78-6)
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