See Also: orthoacid(medicine)
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propidium (medicine) and orthoacid (medicine)


propidium (medicine)


propidium
<chemical> 3,8-diamino-5-(3-(diethymethyammonio) propyl)-6-phenylphenanthridium. Quaternary ammonium analog of ethidium; an intercalating dye with a specific affinity to certain forms of DNA and, used as diiodide, to separate them in density gradients; also forms fluorescent complexes with cholinesterase which it inhibits.

Pharmacological action: dyes, indicators and reagents, intercalating agents.

Chemical name: Phenanthridinium, 3,8-diamino-5-(3-(diethylmethylammonio)propyl)-6-phenyl-


orthoacid (medicine)


orthoacid


An acid in which the number of hydroxyl groups equals the valence of the acid-forming element; e.g., C(OH)4, orthocarbonic acid. When there is no such acid, the one that most nearly approaches this condition is sometimes called an orthoacid; e.g., OP(OH)3, orthophosphoric acid.