MacGregor, James T. published the artcileMetabolism and biliary excretion of phenanthridinium salts. I. Nature of the biliary metabolites, Quality Control of 518-67-2, the publication is Biochemical Pharmacology (1971), 20(10), 2833-46, database is CAplus and MEDLINE.
Up to 50% of the i.v. dose of phenanthridinium salts, 3,8-diamino-6-(p-aminophenyl)-5-methylphenanthridinium chloride (150C47) (I) [33779-70-3] 3,8-diamino-6-phenyl-5-ethylphenanthridinium bromide (ethidium) [518-67-2], and 2-amino-6-(p-carbethoxyaminophenyl)-5-methylphenanthridinium sulfate (carbidium) [32378-55-5] was excreted in the bile of rats with ligated renal pedicles within 1 hr postadministration. The major biliary metabolites were the resp. monoacetyl amino conjugates for I and ethidium and an acetyl conjugate for carbidium. Unchanged ethidium, carbidium and I accounted for 20-25, 20, and 15%, resp., of the biliary metabolites.
Biochemical Pharmacology 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, Quality Control of 518-67-2.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary