Griggs, Billy G. published the artcileAssignment of the carbon-13 chemical shifts of ethidium bromide and analogs in deuterium oxide solution, Application of Dimidium bromide, the publication is Organic Magnetic Resonance (1980), 14(5), 371-3, database is CAplus.
The 13C NMR of the title compounds (I; R = Et, Me, R1 = Ph, X = Br; R = Me, R1 = H, X = Cl), in D2O, were assigned. The assignments were based on fully coupled spectra, selective 1H decoupling, chem. shift arguments, the effect of pD on chem. shifts, and spectra obtained from a selected 180°-τ-90° pulse sequence in conjunction with gated irradiation to obtain nuclear Overhauser enhancement intensification.
Organic Magnetic Resonance published new progress about 518-67-2. 518-67-2 belongs to bromides-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Benzene, name is Dimidium bromide, and the molecular formula is C20H18BrN3, Application of Dimidium bromide.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary