Lorazepam

[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.

Article no. LOR-142

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Lorazepam

Product reference number	LOR-142
Full chemical name	9-Chloro-6-(2-chlorophenyl)-4-hydroxy-2,5-diazabicyclo[5.4.0]undeca-5,8,10,12-tetraen-3-one
Formula	C₁₅H₁₀Cl₂N₂O₂
Molecular weight	321.16
CAS Number	846-49-1
DEA No.	2885 CIV
Appearance	white to off-white crystalline powder
IR	IR corresponds
UV max [nm] (mol, solvent)	229.0 ± 1.0 (39000 ± 3000, nanopure water); 318.0 ± 1.0 (2100 ± 200, nanopure water)
Melting point [Celsius]	176 ± 3 (dec.)
HPLC purity [%]	> 98.5
Optical rotation (conc., solvent)	racemic
Water content [%]	< 1