Definition: The term in question is 503368.1820570-64-6, and it's a hydronium salt with formula Fmoc-Arg(Me)2-OH(asymmetrical). The acid parent is HCl (hydrochloric acid).
503368. 1820570-64-6; Fmoc-Arg(Me)2-OH(asymmetrical)Hydrochloride
closed bracket.
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