Maxacalcitol Impurity 9 CAS 103909-73-5
| CAS No. | 103909-73-5 |
| Molecular Formula | C21H32O3 |
| Molecular Weight | 332.48 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Maxacalcitol Impurity 9 is closely related to a steroid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
As a process- or degradation-related impurity, Maxacalcitol Impurity 9 (CAS 103909-73-5, C21H32O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Maxacalcitol Impurity 9 (C21H32O3) 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).
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.
CATO manufactures Maxacalcitol Impurity 9 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 | C21H32O3 |
| Molecular Weight | 332.48 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
Related Maxacalcitol Standards
- Maxacalcitol Impurity 17 (CAS 147725-62-0)
- Maxacalcitol Impurity 18 (CAS 147725-63-1)
- Maxacalcitol Impurity 2 (CAS 192573-33-4)
- Maxacalcitol Impurity 25 (CAS 681433-99-8)
- Maxacalcitol Impurity 22 (CAS CATO-C4X-278822)
- Maxacalcitol Impurity 23 (CAS CATO-C4X-278823)
- Maxacalcitol Impurity 21 (CAS 192573-36-7)
- Maxacalcitol Impurity 42 (CAS 81506-24-3)
Recommended Standards
- Tibolone Impurity 14 (CAS 88247-84-1)
- Androsterone 3-Acetate (CAS 1164-95-0)
- Treprostinil Impurity 1 (CAS 101692-02-8)
- Oxymetholone (CAS 434-07-1)
- Liraglutide Impurity 6 TFA Salt (CAS CATO-C4X-19926)
- Mirabegron Impurity 85 (CAS CATO-C4X-103285)
- Macitentan Impurity 35 (CAS 441798-36-3)
- (2S,3R)-1-Benzyl 3-tert-butyl 2-methylpiperidine-1,3-dicarboxylate (CAS 1044563-67-8)
- 2-(2-Aminophenyl)-N,N-dimethylacetamide (CAS 86162-60-9)
- 3-[(4-ethylpiperazin-1-yl)methyl]benzene-1-carboximidamide trihydrochloride (CAS 1235440-83-1)
- 2,2,2-trifluoroethyl 3,5-dimethoxyphenylcarbamate (CAS 1087797-91-8)
- 2-Chloro-6-fluoro-N-(5-(1-methyl-1H-pyrazol-5-yl)-1,3,4-oxadiazol-2-yl)benzamide (CAS 1172551-45-9)
- 1-Methyl-4-oxo-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidine-6-carboxylic acid (CAS 1029420-83-4)
- 302798-54-5 (Leu31,Pro34)-Neuropeptide Y (13-36) (human, rat) MFCD00672463 (CAS 302798-54-5)
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