1-Propanaminium, 3-carboxy-N,N,N-trimethyl-2-(1-oxopropoxy)-, inner salt 17298-37-2 3-Carboxy-N,N,N-trimethyl-2-(1-oxopropoxy)-1-propanaminium inner salt L-Propionylcarnitine Propionyl carnitine Propionylcarnitine