Naloxone Hydrochloride is an opioid antagonist. It is chemically described as 4,5α-Epoxy-3,14-dihydroxy-17-(prop-2-enyl)morphinan-6-one hydrochloride dihydrate. Molecular formula of Naloxone Hydrochloride is C19H22ClNO4.2H2O and molecular weight is 399.9.
Naloxone Hydrochloride dihydrate appears as a white to almost white, crystalline powder, and is freely soluble in Water, soluble in Ethanol (96%), practically insoluble in Toluene. Its melting range is 138-140°C.