Assertion: impurity | /r/HasProperty | described by formula
Facets:
Source sentences:
text: A cyclization reaction produces another impurity, namely montelukast cyclizate, chemically 7-chloro-2-{2-[3-(l,l-dimethyl-l,3,4,5- tetrahydrobenzo[c]-oxepin-3-yl)phenyl]vinyl}quinoline, described by formula (XI), from the intermediate (VII).