[CAS Number 846-49-1] Lorazepam, sold under the brand name Ativan, is classified as a benzodiazepine. Lorazepam is a metabolite of diclazepam that contains anxiolytic, anti-anxiety, anticonvulsant, anti-emetic, and sedative properties. It is primarily used to treat anxiety. Lorazepam is available as reference material (bulk powder and/or solution) and as calibrated, Ready-to-Use, certified reference material (CRM). This product is designed for qualitative and quantitative protocols and can be used for forensic, toxicology, research, and other chemical/biochemical analytical applications.