Montelukast Impurity 42 CAS 149968-10-5
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 149968-10-5 |
| Molecular Formula | C20H16ClNO |
| Molecular Weight | 321.80 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Montelukast Impurity 42 (CAS 149968-10-5) is a pharmacopoeial impurity standards certified reference material from CATO. Molecular formula: C20H16ClNO. Molecular weight: 321.80 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C20H16ClNO |
| Molecular Weight | 321.80 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Montelukast Standards
- Montelukast Impurity 44 (CAS 115104-40-0)
- Montelukast Impurity 26 (CAS 120578-03-2)
- Montelukast Disulfide Impurity (CAS 162515-67-5)
- Montelukast Impurity N27 (CAS 610-97-9)
- Montelukast Impurity 9 (CAS 30430-40-1)
- Montelukast Impurity 56 (CAS 1100617-38-6)
- Montelukast Impurity 57 (CAS 30220-25-8)
- Montelukast Impurity N4 (CAS 855473-50-6)
Recommended Standards
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- 3-Bromo-5-methyl-1H-1,2,4-triazole (CAS 15777-57-8)
- (Z)-3-Methyl-4-((phenylthio)methylene)isoxazol-5(4H)-one (CAS 61861-48-1)
- Exenatide Acetate (CAS 141732-76-5)
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