1,10-Phenanthroline, 2,9-dimethyl- 2,9-Dimethyl-1,10-phenanthroline 2,9-Dimethylphenanthroline 41066-08-4 484-11-7 7296-20-0 EINECS 207-601-9 NSC 4280 Neocuproin Neocuproine