has role has role has functional parent is conjugate acid of gamma-amino-beta-hydroxybutyric acid carnitine carnitinium CHEBI:3424 Carnitine 3-carboxy-2-hydroxy-N,N,N-trimethylpropan-1-aminium +1 162.11247 A quaternary ammonium ion that is the the conjugate acid of carnitine. PHIQHXFUZVPYII-UHFFFAOYSA-O chebi_ontology CAS:461-06-3 KEGG:C00487 C[N+](C)(C)CC(O)CC(O)=O 162.20688 CAS:406-76-8 3-hydroxy-4-(trimethylammonio)butanoic acid C7H16NO3 InChI=1S/C7H15NO3/c1-8(2,3)5-6(9)4-7(10)11/h6,9H,4-5H2,1-3H3/p+1 quaternary ammonium ion mouse metabolite human metabolite