Montelukast Impurity 19 CAS 1258428-71-5
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 1258428-71-5 |
| Molecular Formula | C29H26ClNO2 |
| Molecular Weight | 455.98 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
High-purity Montelukast Impurity 19 (CAS 1258428-71-5) pharmacopoeial impurity standards reference standard. Molecular formula: C29H26ClNO2. Molecular weight: 455.98 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C29H26ClNO2 |
| Molecular Weight | 455.98 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; 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.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Montelukast Standards
- Montelukast 3-Oxo Benzoate (CAS 149968-11-6)
- Montelukast Impurity 36 (CAS 142569-69-5)
- Montelukast (3R)-Hydroxy Benzoate (CAS 150026-72-5)
- Montelukast Impurity 10 (CAS 150026-75-8)
- Montelukast Impurity 31 (CAS 287930-77-2)
- Montelukast Impurity 47 (CAS 1079753-36-8)
- Montelukast Impurity 49 (CAS CATO-C4X-103149)
- Montelukast Impurity 11 (CAS 120578-04-3)
Recommended Standards
- 5-((3-(4-Chlorophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-3-(2-methoxyethyl)-2-thioxothiazolidin-4-one (CAS 623935-51-3)
- Tolvaptan-d7 (CAS 1246818-18-7)
- 2-[(4-Chlorophenyl)sulfanyl]-N-[3-fluoro-4-(4-phenylpiperazin-1-yl)phenyl]acetamide (CAS 478260-45-6)
- Adrenaline Impurity 22 (CAS 575-81-5)
- Flurbiprofen Impurity 149 (CAS CATO-C4X-1444149)
- 2-Isopropoxy-5-(trifluoromethyl)aniline hydrochloride (CAS 473574-83-3)
- Tert-butyl (2-azabicyclo[2.2.1]Heptan-6-yl)carbamate (CAS 2227205-60-7)
- Morphine-3-β-D-glucuronide-D3 (CAS 136765-44-1)
- 2-(5-Fuoro-2-methoxy-3-nitrophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2782030-81-1)
- Peptide YY (canine, mouse, porcine, rat) trifluoroacetate salt (CAS 81858-94-8)
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 13829788188 / jacky.chen@cato-chem.com