| Appearance | White to Off-White Solid |
| Melting Point | 205-208°C (dec.) |
| Molecular Weight | 461.81 |
| Storage | -20°C, Hygroscopic |
| Solubility | DMSO (Slightly), Methanol (Slightly, Sonicated), Water (Slightly) |
| Stability | Hygroscopic |
| Category | Standards; Chiral Molecules; Pharmaceutical/API Drug Impurities/Metabolites; |
| Applications | A nonsedating type histamine H1-receptor antagonist. A major metabolite of Hydroxyzine. Pharmacological activity resides primarily in the (R)-isomer. Antihystaminic. |
| Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package |
