Precursor to metabolite: Heroin to Morphine

Heroin is converted to Morphine by esterase.

Heroin mascot — mnemonic cartoon — Heroin — mascot

Morphine mascot — mnemonic cartoon — Morphine — mascot

The pair

Heroin — Diacetylmorphine; a rapidly-acting prodrug of morphine, no US medical use.
Morphine — The prototypical opioid analgesic and comparison standard.

Heroin · Morphine · Open Heroin in the interactive console ↗