CAS 13745-58-9 appears in our catalog under these names: 1,4-Dimethyl-1h-pyrazole-5-carboxylic acid, 95%, 1,4-dimethyl-1H-pyrazole-5-carboxylic acid, 1,4-Dimethyl-1H-pyrazole-5-carboxylic acid 98%, 1，4-Dimethyl-1H-Pyrazole-5-Carboxylic Acid, 98%, 98%, 1,4-Dimethyl-1H-pyrazole-5-carboxylic acid, 98%. Offered by: Combi-blocks, Biosynth, Ambeed, Chemat, Fluorochem. Available pack sizes: 1g, 250mg, 100mg, 5g.