Hong Kong, etorphine is regulated under Schedule 1 of Hong Kong's Chapter 134 Dangerous Drugs Ordinance. It can be used legally only by health professionals and for university research purposes. The substance can be given by pharmacists under a prescription. Anyone who supplies the substance without prescription can be fined $10,000 (HKD). The penalty for trafficking or manufacturing the substance is a $5,000,000 (HKD) fine and life imprisonment. Possession of the substance for consumption without license from the Department of Health is illegal with a $1,000,000 (HKD) fine and/or 7 years of jail time. In the Netherlands, etorphine is a Schedule I drug of the Opium Law. It is used only for veterinary purposes in zoos to immobilize large animals. In the US, etorphine is listed as a Schedule I drug with an ACSCN of 9056, although its hydrochloride salt is classified as Schedule II with an ACSCN of 9059. For both, the 2013 annual aggregate manufacturing quota for both was zero so presumably veterinary supplies of the hydrochloride are imported from Germany and/or the UK. In the UK, under the Misuse of Drugs Act 1971, etorphine is controlled as a Class A substance. In Italy Etorphine is illegal, as are the parent compounds Dihydroetorphine and Acetorphine. (Datas from 2022) See also 6,14-Endoethenotetrahydrooripavine - the central nucleus of all Bentley compound opioids under which class etorphine falls Dihydroetorphine – a close analog of etorphine that has been used as an opioid painkiller for human usage in China Thienorphine Opioid potency comparison References External links Opioids.com page on etorphine Etorphine: Molecule of the Month Analgesics Delta-opioid receptor agonists 4,5-Epoxymorphinans Ethers Semisynthetic opioids Kappa-opioid receptor agonists Mu-opioid receptor agonists Nociceptin receptor agonists Phenols Tertiary alcohols