CAS 20870-77-3 appears in our catalog under these names: 4-Chloroindolin-2-one 98%, 4-Chloroindolin-2-one, 98%, 98%, 4-Chloro-1,3-dihydro-2H-indol-2-one, 97%. Offered by: Ambeed, Chemat, Fluorochem. Available pack sizes: 250mg, 1g, 5g, 25g, 100g, 10g.