1H-Pyrrolo[3,2-b]pyridine-6-carboxylic Acid Methyl Ester is the methyl ester derivative of 1H-Pyrrolo[3,2-b]pyridine-6-carboxylic Acid (P998590) and is used as a reagent in the synthesis of azetidinylpiperidine derivatives as monoacylglycerol lipase inhibitors useful in the treatment of inflammatory pain.