Montelukast Impurity 29 CAS 184764-13-4
| CAS No. | 184764-13-4 |
| Molecular Formula | C28H24ClNO2 |
| Molecular Weight | 441.95 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 441.95 g/mol gives Montelukast Impurity 29 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Montelukast Impurity 29 (CAS 184764-13-4) is a certified pharmaceutical impurity reference standard with the molecular formula C28H24ClNO2 and a molecular weight of 441.95 g/mol.
Montelukast Impurity 29 (C28H24ClNO2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 Montelukast Impurity 29 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 | C28H24ClNO2 |
| Molecular Weight | 441.95 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at room temperature, 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2009 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Montelukast Standards
- Montelukast Impurity N19 (CAS 150026-73-6)
- Montelukast Dehydro Impurity (CAS 168214-68-4)
- Montelukast Impurity 27 (CAS 168214-67-3)
- Montelukast Impurity 32 (CAS 1187586-63-5)
- Montelukast Impurity 37 (CAS CATO-C4X-103137)
- Montelukast Impurity 11 (CAS 120578-04-3)
- Montelukast 3-Oxo Benzoate (CAS 149968-11-6)
- Montelukast Impurity 19 (CAS 1258428-71-5)
Recommended Standards
- Methyl 2-[({5-[(E)-2-[(4-chlorophenyl)amino]ethenyl]-4-cyano-1,2-thiazol-3-yl}sulfanyl)methyl]benzoate (CAS 338778-49-7)
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- 2-(4-(1-(4-Chlorophenyl)-4-(piperidin-1-yl)-1H-pyrazolo[3,4-d]pyrimidin-6-yl)piperazin-1-yl)ethanol (CAS 1207046-09-0)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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