(2R)-3-carboxy-N,N,N-trimethyl-2-(propanoyloxy)propan-1-aminium chloride 1-Propanaminium, 3-carboxy-N,N,N-trimethyl-2-(1-oxopropoxy)-, chloride, (R)- 119793-66-7 Levocarnitine propionate hydrochloride Levocarnitine propionate hydrochloride [USAN] ST 261