Noracymethadol, also known as NLAAM, belongs to the class of organic compounds known as diphenylmethanes. Noracymethadol is a very strong basic compound. Noracymethadol is an acetyl ester of methadol and it can be said with some precision that it is either the heroin or 6-monoacetylmorphine analogue of methadol, and being a methadol it exhibits optical isomerism. Some side effects included salivation, ataxia, and respiratory depression that was reversible by naloxone. In a clinical trial of postpartum patients it was reported to produce analgesia comparable to that of morphine but with less nausea, dizziness, and drowsiness.

Noracymethadol is a synthetic opioid analgesic related to methadone that was never marketed.

Metabocard for Noracymethadol:
https://hmdb.ca/metabolites/HMDB0061036