CAS 2127110-20-5 appears in our catalog under these names: 4,6-Dichloropyrazolo[1,5-a]pyrazine 98%, 4,6-DICHLOROPYRAZOLO[1,5-A]PYRAZINE, Pyrazolo[1,5-a]pyrazine, 4,6-dichloro-, 97%, 97%, 4,6-Dichloropyrazolo[1,5-a]pyrazine, 98%. Offered by: Ambeed, Sigma-Aldrich, Chemat, Fluorochem. Available pack sizes: 100mg, 250mg, 1g, 5g, 25g, 10g, 500MG.