Assertion: amphetamine's impurity | /r/HasProperty | naphthalene
Facets:
Source sentences:
text: Diagnostic impurities are the naphthalenes 1-benzyl-methylnaphthalene and 1,3-dimethyl-2-phenylnaphthalene, arising in the Nagai and Leuckart routes, and cis- or trans- 1,2-dimethyl-3-phenylaziridine, ephedrine, or erythro-3,4-dimethyl- 5-phenyloxazolidine, arising in the Nagai and Emde routes; these are absent in the reductive amination route.