CAS 1881293-85-1 appears in our catalog under these names: 5-chloro-1H-pyrazole hydrochloride, 95%, 3-chloro-1H-pyrazole hydrochloride, 95%, 5-Chloro-1H-pyrazole hydrochloride 95%. Offered by: Combi-blocks, Ambeed. Available pack sizes: 1g, 5g, 100mg, 250mg.