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ortho-methoxy Butyryl fentanyl (hydrochloride) (exempt preparation) (Item No. 39949) is an analytical reference standard that is structurally similar to known opioids. ortho-methoxy Butyryl fentanyl is regulated as a Schedule I compound in the United States. ortho-methoxy Butyryl fentanyl (hydrochloride) (exempt preparation) (Item No. 39949) is provided as a DEA exempt preparation. This product is intended for research and forensic applications.WARNING This product is not for human or veterinary use.

ortho-methoxy Butyryl fentanyl (hydrochloride) (Item No. 22035) is an analytical reference standard that is structurally similar to known opioids. ortho-methoxy Butyryl 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.