Exemestane Impurity 35 CAS CATO-C4X-164135
| CAS No. | CATO-C4X-164135 |
| Molecular Formula | C22H30O3 |
| Molecular Weight | 342.47 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
As a process- or degradation-related impurity, Exemestane Impurity 35 (CAS CATO-C4X-164135, C22H30O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Exemestane Impurity 35 (C22H30O3) contains a steroid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
CATO manufactures Exemestane Impurity 35 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 | C22H30O3 |
| Molecular Weight | 342.47 g/mol |
| Appearance | Pale yellow to 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Exemestane Standards
- Exemestane EP Impurity J (CAS 1160599-91-6)
- Exemestane Impurity 19 (CAS CATO-C4X-164119)
- Exemestane Diol Impurity (CAS 184972-11-0)
- Exemestane Impurity 5 (CAS CATO-C4X-164134)
- Exemestane EP Impurity I (CAS CATO-C4X-164122)
- Exemestane EP Impurity B (CAS 184972-09-6)
- 6-beta-Exemestane EP Impurity B (CAS 121021-51-0)
- Exemestane Impurity 23 (CAS CATO-C4X-164123)
Recommended Standards
- Progesterone Impurity 80 (CAS CATO-C4X-150280)
- Bempedoic Acid Intermediate Impurity 14 (CAS 413624-71-2)
- Progesterone Impurity 50 (CAS 64662-12-0)
- Estradiol Valerate EP Impurity F (CAS 18069-79-9)
- Bempedoic Acid Impurity 21 (CAS CATO-C4X-218921)
- Phentolamine Impurity 17 (CAS 57182-48-6)
- Methylene blue Impurity 16 (CAS CATO-C4X-189616)
- (E)-3-Cyclopentylacrylic acid (CAS 117929-79-0)
- Methyl 3-(3-methylthiophen-2-yl)-3-oxopropanoate (CAS 1379312-51-2)
- 6-(2-Bromo-5-fluorophenoxy)hexanenitrile (CAS 1443354-33-3)
- 4-(2-(Allyloxy)phenyl)-1H-pyrrole-3-carbonitrile (CAS 87388-23-6)
- Ethyl 4-chloro-3-ethyl-1-phenyl-1H-indazole-5-carboxylate (CAS 887587-01-1)
- 3-Amino-4-bromopyrazole (CAS 16461-94-2)
- C-telopeptide (CAS 162929-64-8)
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