Montelukast Impurity 37 CAS CATO-C4X-103137
| CAS No. | CATO-C4X-103137 |
| Molecular Formula | C29H26ClNO |
| Molecular Weight | 439.98 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
As a process- or degradation-related impurity, Montelukast Impurity 37 (CAS CATO-C4X-103137, C29H26ClNO) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Montelukast Impurity 37 (C29H26ClNO) 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; 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.
As a certified reference material (CRM), Montelukast Impurity 37 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C29H26ClNO |
| Molecular Weight | 439.98 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 |
| Degree of Unsaturation (DBE) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Montelukast Standards
- Montelukast Dehydro Impurity (CAS 168214-68-4)
- Montelukast Impurity 27 (CAS 168214-67-3)
- Montelukast Impurity 32 (CAS 1187586-63-5)
- Montelukast Impurity 29 (CAS 184764-13-4)
- Montelukast Impurity N19 (CAS 150026-73-6)
- Montelukast Impurity 11 (CAS 120578-04-3)
- Montelukast Impurity 56 (CAS 1100617-38-6)
- Montelukast 3-Oxo Benzoate (CAS 149968-11-6)
Recommended Standards
- Loratadine Impurity 41 (CAS CATO-C4X-142641)
- 4-Iodo-2-heptafluoropropoxy-1,1,1,2-tetrafluorobutane (CAS 243128-38-3)
- N-(1-(4-Chlorophenyl)ethyl)-2-((4-(4-fluorophenyl)-5-thioxo-4,5-dihydro-1,3,4-thiadiazol-2-yl)thio)acetamide (CAS 869866-06-8)
- Heptafluoroisopropyl 4-iodo-1,1,2,2-tetrafluorobut-1-yl ether (CAS 25080-20-0)
- Plerixafor impurity 40 (CAS CATO-C4X-113340)
- Pirfenidone Impurity 44 (CAS 21901-18-8)
- Tolterodine Impurity 30 (CAS 124937-62-8)
- 1-(3-Amino-1H-pyrazol-1-yl)cyclopropane-1-carbonitrile (CAS 2414516-17-7)
- 3-((4-(3-Nitrophenyl)thiazol-2-yl)amino)benzoic acid (CAS 443747-52-2)
- 1-[Chloro(difluoro)methoxy]-3-fluoro-5-(trifluoromethyl)benzene (CAS 1417567-13-5)
- Ethyl trans-2-(4-Methoxyphenyl)cyclopropanecarboxylate (CAS 6142-64-9)
- Methyl 2-(5-bromo-3-nitro-1H-1,2,4-triazol-1-yl)acetate (CAS 70965-30-9)
- 1-Benzoyl-4-hydroxy-1H-pyrrol-2(5H)-one (CAS 68661-20-1)
- FMRF-Like Neuropeptide (CAS 121801-61-4)
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