Nalbuphine Hydrochloride is a synthetic opioid agonist-antagonist analgesic of the phenanthrene series. Chemically Nalbuphine Hydrochloride is 17-(Cyclobutylmethyl)-4,5α-epoxymorphinan-3,6α,14-triol hydrochloride. Molecular formula of Nalbuphine Hydrochloride is C21H28ClNO4 and molecular weight is 393.91.
Nalbuphine Hydrochloride appears as a white to almost white powder that is soluble in Water and Ethanol, insoluble in Chloroform and Ether. Its melting point is about 230°C.