Prielbrusye National Park Prielbrusye National Park Prielbrusye National Park () (also, Prielbrus'e, in English, "Mt. Elbrus") is centered on Mt. Elbrus, the highest mountain in Europe at 5,632 meters above sea level. The relative isolation of steep gorges has led to high levels of endemism and biodiversity. The park is in the central Caucasus Mountains, one of 22 national parks in the Caucasus of different nationalities, covering 1.8% of the region. The park is situated in Elbrussky District and Zolsky District, in the southwestern corner of the Kabardino-Balkar Republic of Russia. Prielbrusye National Park is located on the peaks and north slope of
MT-45 MT-45 MT-45 (IC-6) is an opioid analgesic drug invented in the 1970s by Dainippon Pharmaceutical Co. It is chemically a 1-substituted-4-(1,2-diphenylethyl)piperazine derivative, which is structurally unrelated to most other opioid drugs. Racemic MT-45 has around 80% the potency of morphine, with almost all opioid activity residing in the (S) enantiomer (the opposite stereochemistry from the related drug lefetamine). It has been used as a lead compound from which a large family of potent opioid drugs have been developed, including full agonists, partial agonists, and antagonists at the three main opioid receptor subtypes. Recreational use of MT-45 has been associated with