Supplier Page from Cayman Chemical for U-48800 (hydrochloride)
(±)-cis-3-methyl Norfentanyl from Cayman Chemical
4-methyl Fentanyl (hydrochloride) (exempt preparation) from Cayman Chemical
Benzodioxole fentanyl-d5 (hydrochloride) from Cayman Chemical
N-(3,4,5-TMA) Fentanyl (hydrochloride) from Cayman Chemical