Zafirlukast
CAS: 107753-78-6
Category: Indole Compounds
| Purity | Reagent Grade ≥98%, High-Purity Grade ≥99%, Pharmaceutical Grade ≥99.5% |
| Molecular Formula | C31H33N3O6S |
| Molecular Weight | 575.68 |
| Appearance | white to pale yellow crystalline powder |
| Packaging | 1 kg/aluminum foil bag, 25 kg/fiber drum. |
| Testing Indicators | Appearance — Visual inspection; Identification — IR, LC-MS; Purity — Gradient RP-HPLC; Polymorphic form — XRPD; Residual solvents — HS-GC; Heavy metals — ICP-MS; Moisture — Karl Fischer titration; Microbial limits — Membrane filtration; Cysteinyl leukotriene impurities — SEC. |
| Storage Notes | Stored in a cool, dry, and well-ventilated place at room temperature in a tightly closed container, away from light and strong oxidizers. |
| Lead Time | 10 days |
Used as a leukotriene receptor antagonist intermediate in the synthesis of oral asthma maintenance therapies to reduce inflammation and bronchoconstriction.