Estriol impurities and related standards
4 reference standards related to Estriol held in the RSSE catalogue — pharmacopoeial impurities, non-compendial impurities, metabolites and labelled analogues where available.
CAS numbers are listed for 4 of 4; 4 entries carry a structure drawing.
| Compound | CAS No. | Catalogue No. | Formula | MW |
|---|---|---|---|---|
| Estriol EP Impurity E | 1228-72-4 | RS-E050001 | C18H24O3 | 288.38 |
| Estriol EP Impurity C | 1474-53-9 | RS-E050002 | C19H26O3 | 302.41 |
| Estriol EP Impurity I | 15370-49-7 | RS-E050003 | C18H22O3 | 286.37 |
| Estriol Impurity 9 | 177714-21-5 | RS-E050004 | C20H26O6S | 394.48 |
Structures
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Estriol EP Impurity E
COA per lot -
Estriol EP Impurity C
COA per lot -
Estriol EP Impurity I
COA per lot -
Estriol Impurity 9
COA per lot
Cannot find the impurity you need? Non-compendial impurities can be quoted from a structure — a CAS number is not required. Write to [email protected].