phosphoarginine

noun
phos·pho·ar·gi·nine | \ ˌfäs-(ˌ)fō-ˈär-jə-ˌnēn \

Medical Definition of phosphoarginine 

: a compound C6H15N4O5P of arginine and phosphoric acid that functions in various invertebrates (as crustaceans) in a way similar to that of phosphocreatine in vertebrates

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