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para-methyl Cyclopropyl fentanyl (hydrochloride) (Item No. 23045) is an analytical reference standard categorized as an opioid.1 para-methyl Cyclopropyl fentanyl 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.

[1] SHERIF H. HASSANIEN. In vitro pharmacology of fentanyl analogs at the human mu opioid receptor and their spectroscopic analysis[J]. Drug Testing and Analysis, 2020, 12 8: 1212-1221. DOI: 10.1002/dta.2822