1H-Pyrazole-3,5-dicarboxylic acid（Cat No.:L032405）is a heterocyclic organic compound featuring a pyrazole ring substituted with carboxylic acid groups at the 3 and 5 positions. With the molecular formula C5H4N2O4, it appears as a white to off-white crystalline solid and is soluble in water and polar solvents. This compound is commonly used as an intermediate in pharmaceutical and agrochemical synthesis, owing to its reactive functional groups. Its structure enables coordination with metal ions, making it useful in materials chemistry and catalysis research. It also serves as a building block in heterocyclic compound libraries.