CAS 842973-65-3 appears in our catalog under these names: 3-Chloropyrazolo[1,5-a]pyrimidine-2-carboxylic acid, 95%, 3-Chloropyrazolo(1,5-a)pyrimidine-2-carboxylic acid, 95+%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 250mg, 1g, 10g, 5g, 100mg.