CAS 918405-21-7 appears in our catalog under these names: 5-Amino-1-(2,4-difluorophenyl)-1h-pyrazole-4-carboxylic acid, 95%, 5-Amino-1-(2,4-difluorophenyl)-1H-pyrazole-4-carboxylic acid, 97%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 1g, 5g, 250mg.