Assertion: amphetamine's impurity | /r/RelatedTo | its synthesis
Facets:
value: than the compound
type: OTHER
Source sentences:
text: However, Brunt and colleagues stated, "extreme caution" should be used when inferring the toxicity of mephedrone from methcathinone, noting some of the toxicity associated with methcathinone is due to manganese impurities related to its synthesis, rather than the compound itself.