Cocaethylene-D3 is a stable-labeled internal standard used for the quantification of cocaethylene. Cocaethylene is the ethyl ester of benzoylecgonine formed as a result of the simultaneous ingestion of alcohol and cocaine. The resulting formation of cocaethylene causes enhanced euphoria, increased heart rate, and plasma cocaine concentration. Cocaethylene-D3 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.