Estetrol Impurity 3 CAS CATO-C4X-32503
| CAS No. | CATO-C4X-32503 |
| Molecular Formula | C27H32O5 |
| Molecular Weight | 436.54 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 436.54 g/mol gives Estetrol Impurity 3 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Estetrol Impurity 3 (CAS CATO-C4X-32503) is a certified pharmaceutical impurity reference standard with the molecular formula C27H32O5 and a molecular weight of 436.54 g/mol.
Based on its molecular formula C27H32O5, Estetrol Impurity 3 contains a steroid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 436.54 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Estetrol Impurity 3 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C27H32O5 |
| Molecular Weight | 436.54 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Estetrol Standards
- Estetrol Impurity 2 (CAS CATO-C4X-32502)
- Estetrol Impurity 10 (CAS 3088028-02-5)
- Estetrol Impurity 1 (CAS CATO-C4X-32501)
- Estetrol Impurity 8 (CAS 28200-88-6)
- Estetrol Impurity 9 (CAS 3088028-01-4)
- Estetrol 17-Acetate (CAS 690996-23-7)
- Estetrol Impurity 4 (CAS CATO-C4X-32504)
- Estetrol Impurity 5 (CAS CATO-C4X-32505)
Recommended Standards
- N4,N4'-Di(naphthalen-2-yl)-[1,1'-biphenyl]-4,4'-diamine (CAS 10311-62-3)
- Forskolin G (CAS 473981-11-2)
- 2,2'-Diphenyl-[1,1'-binaphthalene]-4,4'-diamine (CAS 119697-25-5)
- 3-O-Benzyl Estetrol 17-Acetate (CAS 690996-24-8)
- Salbutamol Impurity 107 (CAS 66654-06-6)
- Rosuvastatin Impurity 217 (CAS CATO-C4X-1169217)
- Doxorubicin Impurity 39 (Mixture of Diastereomers) (CAS 210837-87-9)
- Ethyl 4-(3-(4-methoxyphenyl)propanoyl)benzoate (CAS 898775-66-1)
- 4-(6-Methoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)morpholine (CAS 1883761-43-0)
- N,N-Dibenzyl-2-bromoaniline (CAS 1075193-04-2)
- N-(4-Bromo-2-fluorobenzyl)propan-1-amine (CAS 1094257-47-2)
- 5-Ethynyl-2-methylquinoline (CAS 1315248-49-7)
- (2-{5-[(3,5-Dimethylphenoxy)methyl]-1,2,4-oxadiazol-3-yl}ethyl)methylamine hydrochloride (CAS 1332530-53-6)
- Des-Gln24-Tirzepatide (CAS CATO-CPTD788949)
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