Olotadine lmpurity 55 CAS CATO-C4X-171855
| CAS No. | CATO-C4X-171855 |
| Molecular Formula | C20H21NO3 |
| Molecular Weight | 323.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Olotadine lmpurity 55 (CAS CATO-C4X-171855), a pharmacopoeial impurity reference standard (molecular formula C20H21NO3, MW 323.39 g/mol) used for the identification and quantification of trace impurities in APIs.
Olotadine lmpurity 55 (C20H21NO3) contains a steroid core, an amide group, 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 high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C20H21NO3 |
| Molecular Weight | 323.39 g/mol |
| Appearance | Pale yellow to 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Olotadine Standards
Recommended Standards
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- Gadodiamide EP Impurity B Disodium Salt (CAS 92923-64-3)
- Tolvaptan Impurity 23 (CAS 1580889-33-3)
- Trilaciclib Impurity 16 (CAS CATO-C4X-304416)
- Dihydro Nicotyrine-d3 (CAS 1246818-62-1)
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- (S)-4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-1H-inden-1-ol (CAS 2077991-52-5)
- 3-Bromo-8-methoxy-6,6-dimethylnaphtho[2,3-b]benzofuran-11(6H)-one (CAS 1256588-91-6)
- 1-(2-Methoxylphenyl)-3,3-dimethylbutan-2-one (CAS 75508-73-5)
- 4-(4-bromophenyl)-2,5-dihydro-1H-pyrrol-2-one (CAS 1017246-65-9)
- Peptide Impurity 12 (CAS CATO-CPTD788812)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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