P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P307+P311:IF exposed: call a POISON CENTER or doctor/physician.
Description
3-Ethyl-3-(3-hydroxyphenyl)-1-methylazepan-2-one (cas# 71556-74-6) is an impurity of meptazinol, which is a mixed opioid agonist-antagonist. Analgesic (narcotic).