Back to matchesWe found a matchYour institution may have rights to this item. Sign in to continue.Title15N Enrichment of Ammonium, Glutamine-amide and Urea, Measured via Mass Isotopomer Analysis of Hexamethylenetetramine.AuthorsYang, Dawei; Puchowicz, Michelle A.; David, France; Powers, Lisa; Halperin, Mitchell L.; Brunengraber, HenriPublicationJournal of Mass Spectrometry, 1999, Vol 34, Issue 11, p1130ISSN1076-5174Publication typeArticleDOI10.1002/(SICI)1096-9888(199911)34:11<1130::AID-JMS871>3.0.CO;2-Y