3,4-MDMA-d5 (hydrochloride) (Item No. 42148) is intended for use as an internal standard for the quantification of 3,4-MDMA (Item Nos. ISO60190 | 13971 | 34480) by GC- or LC-MS. 3,4-MDMA is categorized as an amphetamine. 3,4-MDMA has been found in tablets seized by law enforcement and has been associated with overdoses.1,2 3,4-MDMA-d5 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.