Alphamethadol
Alphamethadol
Synthetic opioid analgesic drug
Alphamethadol (INN), or α-methadol, also known as alfametadol, is a synthetic opioid analgesic.[2] It is an isomer of dimepheptanol (methadol), the other being betamethadol (β-methadol).[3] Alphamethadol is composed of two isomers itself, L-α-methadol, and D-α-methadol.[3] The former compound, L-α-methadol, is an important active metabolite of levacetylmethadol (LAAM),[citation needed] an opioid substitute drug that is used clinically. Both of alphamethadol's isomers bind to and activate the μ-opioid receptor and are active as opioid analgesics,[4] similarly to those of alphacetylmethadol (α-acetylmethadol).[5]