(R)-3-Carboxy-2-(4-mercapto-1-oxobutoxy)-N,N,N-trimethyl-1-propanaminium chloride 1-Propanaminium, 3-carboxy-2-(4-mercapto-1-oxobutoxy)-N,N,N-trimethyl-, chloride, (R)- 4-Mercaptobutyryl carnitine chloride 83544-81-4