5-formyl-1H-pyrrole-2-carboxylic acid; CAS No.: 7126-51-4; 5-formyl-1H-pyrrole-2-carboxylic acid. PROPERTIES: 5-formyl-1H-pyrrole-2-carboxylic acid has molecular formula C6H5NO3 with molecular weight approximately 147.1 g/mol. It typically forms colorless crystals with a reported melting point of 195-198 C. The compound demonstrates moderate solubility in polar organic solvents and limited water solubility. Proper storage involves keeping in a tightly sealed container at room temperature away from heat and direct sunlight. Safety considerations include using personal protective equipment during handling to prevent skin and eye contact, as it may cause irritation. The formyl group is reactive and may form complexes with metals. In case of spillage, absorb with inert material and dispose of properly. APPLICATIONS: 5-formyl-1H-pyrrole-2-carboxylic acid serves as a building block for antiviral agents. Its formyl group provides valuable reactivity for further chemical modification. In pharmaceutical research, it has been utilized to develop novel antiviral compounds targeting viral proteases, as documented in medicinal chemistry journals specializing in virology. The carboxylic acid functionality enables formation of amide and ester bonds for further structural elaboration. Additionally, this compound acts as a precursor for chemical sensors, with applications described in analytical chemistry literature focusing on colorimetric probes for biomarker detection.