Medetomidine, as a new type of analgesic and sedative, is playing an increasingly important role in the medical with its unique pharmacological effects and broad application prospects. The Chinese synonyms of medetomidine include medetomidine, medetomidine base (intermediate hydrochloride medetomidine), 4-(1-(2,3-dimethylphenyl)ethyl)-1H-imidazole, medetomidine medetomidine (base), etc. Its English name is Medetomidine, and the English synonyms include 4-[1-(2,3-Dimphenyl)ethyl]-1H-imidazole, (-)-4-(alpha,2,3-Trimethylbenzyl)imidazole, (Rs)--(alpha,2,3-trimethylbenzyl)imidazol, 1H-Imidazole,4-(1-(2,3-dimphenyl)ethyl)-, 86347-15-1 (Hydrochloride), Medetomidine, dl-Medetomid, DoMtor. The CAS number of medetomidine is 86347-14-0, the molecular formula is C13H6N2, and the molecular weight is 200.28. In terms of physical properties, the boiling point is 381.911.0°C (Predicted), the density is 1.053, and the storage conditions are sealed and dry, and stored at room temperature The solubility of medetomidine is soluble in dimethyl sulfoxide, the form is powder, the acid dissociation constant (pKa) is14.29±0.10 (Predicted), and the color is white to off-white.