Ethylmorphine is a drug which belongs to both the class of opiates and. Its results in humans are due to its metabolic conversion to morphine. It was invented in Germany at Merck during the 80s and it used to be used a weaker alternative to heroin for indications.
Chemically, ethylmorphine is a morphine molecule with a -OC2H5 group substituted for the 3-OH group. Thus the closest chemical relative of ethylmorphine is codeine, often referred to as methylmorphine.
As with the case with all narcotic analgesics, ethylmorphine is addiction-forming and can generate drug dependence of the codeine style.