Tags: Drug.
Alphamethadol (INN) or α-methadol also known as alfametadol is a synthetic opioid analgesic. It is an isomer of dimepheptanol (methadol) the other being betamethadol (β-methadol). Alphamethadol is composed of two isomers itself L-α-methadol and D-α-methadol. The former compound L-α-methadol is an important active metabolite of levacetylmethadol (LAAM)[citation needed] an opioid substitute drug that is used clinically.