Montelukast Impurity 31 CAS 287930-77-2
| CAS No. | 287930-77-2 |
| Molecular Formula | C29H28ClNO2 |
| Molecular Weight | 457.99 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Montelukast Impurity 31 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.
CATO supplies Montelukast Impurity 31 (CAS 287930-77-2), a pharmacopoeial impurity reference standard (molecular formula C29H28ClNO2, MW 457.99 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Montelukast Impurity 31 (C29H28ClNO2) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
Physical & Chemical Properties
| Molecular Formula | C29H28ClNO2 |
| Molecular Weight | 457.99 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Montelukast Standards
- Montelukast Impurity 10 (CAS 150026-75-8)
- Montelukast Impurity 47 (CAS 1079753-36-8)
- Montelukast Impurity 49 (CAS CATO-C4X-103149)
- Montelukast Impurity 36 (CAS 142569-69-5)
- Montelukast (3R)-Hydroxy Benzoate (CAS 150026-72-5)
- Montelukast Impurity 19 (CAS 1258428-71-5)
- Montelukast 3-Oxo Benzoate (CAS 149968-11-6)
- Montelukast Impurity 11 (CAS 120578-04-3)
Recommended Standards
- 2-(2-(3-(2-(7-Chloro-2-quinolinyl)-ethenylphenyl)-3-hydroxypropyl)phenyl)-2-propanol (CAS 142569-70-8)
- 3-((4-Chlorobenzyl)thio)-5-((naphthalen-1-yloxy)methyl)-4-phenyl-4H-1,2,4-triazole (CAS 335218-30-9)
- (2S)-2-(4-Chlorophenyl)-1-[4-[(5R,7R)-6,7-dihydro-7-hydroxy-5-methyl-5H-cyclopentapyrimidin-4-yl]-1-piperazinyl]-3-[(1-methylethyl)amino]-1-propanone (CAS 1001264-89-6)
- 2-Amino-4-(4-chlorophenyl)-7,7-dimethyl-3-(4-methylbenzenesulfonyl)-5,6,7,8-tetrahydro-4H-chromen-5-one (CAS 860611-39-8)
- Clopidogrel Impurity 125 (CAS CATO-C4X-1029125)
- Paroxetine HCl EP Impurity C (CAS 105813-14-7(free base))
- Torasemide Impurity 42 (CAS CATO-C4X-183642)
- 1-Benzyl-1H-imidazole-5-carboxylic acid (CAS 5317-07-7)
- ((2R,3S,5R)-5-(5-Fluoro-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-3-hydroxytetrahydrofuran-2-yl)methyl palmitate (CAS 96733-83-4)
- 1-[(3-aminophenyl)methyl]piperidin-4-ol (CAS 1016757-84-8)
- (2-Amino-4-methylpyridin-3-yl)methanol (CAS 179554-99-5)
- 9-Methyl-5-tosyl-5,6-dihydroindeno[2,1-b]indole (CAS 185376-48-1)
- 8-Fluoro-5H-pyrimido[5,4-b]indol-4-ol (CAS 331443-90-4)
- Semaglutide Impurity 161 (x TFA Salt) (CAS CATO-C4X-2226161)
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