Azelastine (hydrochloride)
CAS: 79307-93-0
Category: Phthalazinone
| Purity | 0.1% Nasal Spray, 0.05% Ophthalmic Solution, EP Reference Standard |
| Molecular Formula | C22H25Cl2N3O |
| Molecular Weight | 418.36 |
| Appearance | White to off-white crystalline powder |
| Packaging | 5kg/aluminum foil bag placed in a cardboard drum or 10kg/fiber drum. |
| Testing Indicators | Appearance — Visual inspection; Identification — IR, Chloride test; Purity — RP-HPLC; pH — Potentiometry; Residual solvents — HS-GC; Heavy metals — ICP-MS; Moisture — Karl Fischer titration; Microbial limits — Membrane filtration; Phthalazine impurities — HPLC. |
| Storage Notes | Store in a tightly closed container in a cool, dry, and dark place, as it is hygroscopic and light-sensitive. |
| Lead Time | 10 days |
Used as the primary intermediate for the manufacture of antihistamine nasal sprays and eye drops.