A chemical compound consisting of two pyridine rings (six-membered aromatic rings containing nitrogen) bonded together.
From 'di-' (two) and 'pyridyl' (the functional group derived from pyridine). Used in organic chemistry to describe molecular structure.
Dipyridyl compounds are used in herbicides and laboratory reagents—one of them can detect trace metals so sensitively that scientists use it to find contamination invisible to any other test.
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