Exemestane Impurity 36 CAS CATO-C4X-164136
| CAS No. | CATO-C4X-164136 |
| Molecular Formula | C20H28O2 |
| Molecular Weight | 300.44 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Exemestane Impurity 36 (CAS CATO-C4X-164136) is a certified pharmaceutical impurity reference standard with the molecular formula C20H28O2 and a molecular weight of 300.44 g/mol.
Based on its molecular formula C20H28O2, Exemestane Impurity 36 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 300.44 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO manufactures Exemestane Impurity 36 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C20H28O2 |
| Molecular Weight | 300.44 g/mol |
| Appearance | Off-white to pale 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Exemestane Standards
- Exemestane-13C,D3 (CAS CATO-C4X-164116)
- Exemestane Impurity 17 (CAS 10104-53-7)
- Exemestane-d3 (CAS 107868-30-4 (unlabelled))
- Exemestane Impurity 31 (CAS 26991-58-2)
- Exemestane EP Impurity E (CAS 19457-55-7)
- Exemestane EP Impurity H (CAS 122370-91-6)
- Exemestane EP Impurity F (CAS 72648-46-5)
- Exemestane (CAS 107868-30-4)
Recommended Standards
- Progesterone Impurity 76 (CAS CATO-C4X-150276)
- Levonorgestrel EP Impurity R (CAS 2322-77-2)
- Pregabalin Impurity 90 (CAS 1486961-58-3)
- Ropinirole Hydrochloride EP Impurity C (CAS 784110-47-0)
- Etofenamate Impurity 9 (CAS CATO-C4X-26039)
- Canagliflozin Impurity 89 (CAS CATO-C4X-112389)
- Lasmiditan Impurity 50 (CAS CATO-C4X-247850)
- (E)-3-Phenyl-1-(pyridin-4-yl)prop-2-en-1-one (CAS 53940-08-2)
- 3-Cyclopropyl-3-phenylprop-2-enoic acid (CAS 64701-93-5)
- Butenafine Impurity 5 (CAS 101828-08-4)
- (R)-6-bromo-8-methylchroman-4-amine (CAS 1212994-77-8)
- 2-(piperidin-4-yl)-1H-indole hydrochloride (CAS 1803600-40-9)
- Benzyl (2-oxotetrahydrofuran-3-yl)carbamate (CAS 31332-88-4)
- Antistasin-Related Peptide (CAS 161561-46-2)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com