Assertion: pyridine's derivative | /r/ObjectUse | used as reagent
Facets:
Source sentences:
text: As a reagent, a 1-halo- or 1,2-epoxy-derivative may be used, but preferably a cyclic derivative, a halide of 2-hydroxy-4-azoniaspirononane should be used as reagent.
text: As a reagent, a 1-halo- or 1,2-epoxy-derivative may be used, but preferably a cyclic derivative, a halide of 2-hydroxy-4-azoniaspirononane should be used as reagent.