Tetrazepam, marketed under brand names such as Clinoxan, Epsipam, Myolastan, Musaril, Relaxam and Spasmorelax, is a benzodiazepine derivative with anticonvulsant, anxiolytic, muscle relaxant and slightly hypnotic properties. Tetrazepam is used to treat muscle spasm, anxiety disorders, depression, premenstrual syndrome or agoraphobia. This Certified Spiking Solution^® is suitable for use as starting material in calibrators or controls for a variety of LC/MS or GC/MS applications from forensic analysis and clinical toxicology to urine drug testing.