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2,2'-Biquinoline is an organic compound with the formula (C9H6N)2.
B 1795 (OTTO) 2,2'-Biquinoline, GR 99%+ Cas 119-91-5 - used as a reagent for spectrophotometric determination of Cu and as an indicator for titration of organolithium reagents, giving yellow-green charge-transfer complexes.