ADB-4en-PINACA-d4 (Item No. 41434) is intended for use as an internal standard for the quantification of ADB-4en-PINACA (Item No. 33205) by GC- or LC-MS. ADB-4en-PINACA is structurally similar to known synthetic cannabinoids. ADB-4en-PINACA-d4 is regulated as a Schedule I compound in the United States. This product is intended for research and forensic applications.WARNING This product is not for human or veterinary use.