CAS 7742-74-7 appears in our catalog under these names: 3-Chloro-1,2-dihydroisoquinolin-1-one, 3-Chloroisoquinolin-1(2H)-one 97%, 3-Chloroisoquinolin-1(2H)-one, 97%, 97%, 3-Chloroisoquinolin-1(2H)-one, 98%. Offered by: Biosynth, Ambeed, Chemat, Fluorochem. Available pack sizes: 2,5g, 250mg, 100mg, 1g, 5g.