Janssen personally, code R 4263, from the same pethidine-variation programme that gave phenoperidine; marketed as Sublimaze from 1963. Date has a genuine split in the sources: the anaesthesia literature (Stanley, and the December-1960 R-number sequence) says 1960, English Wikipedia says 1959. The compound's later role as the backbone of the illicit synthetic-opioid supply is entirely posthumous to his work.
packagingPrescription fentanyl transdermal system, 50 µg/h: labeled outer pouch with Schedule II marking and the sealed foil packet. User:Crohnie at the English Wikipedia ·CC BY-SAsampleTwo milligrams of fentanyl powder beside a US penny — a potentially lethal dose for most people (DEA photo). United States Drug Enforcement Administration (DEA). ·Public domainseizureCounterfeit 'M30' pills containing fentanyl in many colors ('rainbow fentanyl'), pressed to resemble oxycodone tablets. DEA photo. Drug Enforcement Administration (DEA) ·Public domainsampleA generic fentanyl transdermal patch (12 µg/h) applied to the skin; the clear patch is printed with the drug name and release rate. DanielTahar ·CC BY-SA
