The species distribution of some naturally-occurring quaternary ammonium compounds.
D000818:Animals; D001622:Betaine / Q000032:analysis; D002331:Carnitine / Q000032:analysis*; D002816:Chordata, Nonvertebrate / Q000032:analysis; D002854:Chromatography, Paper; D003445:Crustacea / Q000032:analysis; D004447:Echinodermata / Q000032:analysis; D000644:Quaternary Ammonium Compounds / Q000032:analysis*; D013045:Species Specificity; D013053:Spectrophotometry
D000644:Quaternary Ammonium Compounds; D001622:Betaine; D002331:Carnitine