C 1023 (OTTO) 4-Chloro-2-fluoro-5-nitrotoluene, 98% Cas 8349-11-6 - used in the synthesis of two new C-11 labeled analogs of N,N-dimethyl-2-(2′-amino-4′-hydroxymethyl-phenylthio)benzylamine, which were further evaluated as serotonin transporter imaging agents.