5-Amino-4-cyano-1-(4-chlorophenyl)-3-methylpyrazole is a reagent in the synthesis of novel tetrazole compounds used in the treatment of Leishmania. Also used in the synthesis of 1-​phenyl-​5-​(1H-​pyrrol-​1-​yl)​pyrazole-​3-​carboxamides with cannabinoid receptor activity.