[CAS Number 125229-61-0] Alprazolam-D5 is an internal standard used for the quanitfication of Alprazolam. Alprazolam, sold under the trade name Xanax, is a triazolobenzodiazepine agent thought to enhance specific neurotransmitters' activity in the brain. It is used to treat anxiety disorder, panic disorder, and anxiety caused by depression. Alprazolam-D5 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 use in qualitative and quantitative protocols and can be used for forensic, toxicology, research, and other chemical/biochemical analytical applications.