Phenanthroline
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Related to O-phen: EDTA
Phe`nan´thro`line
n. | 1. | (Chem.) Either of two metameric nitrogenous hydrocarbon bases, C12H8N2, analogous to phenanthridine, but more highly nitrogenized. |
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.