Dihydromorphine is a semi-synthetic opioid derived from morphine. Dihydromorphine is a moderately strong analgesic and is used clinically in the treatment of pain and is also the active metabolite of dihydrocodeine.

Dihydromorphine:
https://drugs.ncats.io/drug/C3S5FRP6JW

Dihydromorphine:
It is a moderately strong pain reliever and is used clinically in the treatment of pain and is also the active metabolite of dihydrocodeine. The process for manufacturing dihydromorphine from morphine for pharmaceutical use was developed in Germany in the late 19th Century, with the synthesis being published in 1900 and the drug introduced clinically as Paramorfan shortly thereafter. Dihydromorphine is slightly stronger than morphine as an analgesic with a similar side effect profile. It is also slighty stronger than codeine.