CAS 99-40-1 appears in our catalog under these names: 2-Chloro-1-(3,4-dihydroxyphenyl)ethanone, 99%, 99%, 2-Chloro-1-(3,4-dihydroxyphenyl)ethanone, 2-Chloro-1-(3,4-dihydroxyphenyl)ethanone 98%, 2-Chloro-1-(3,4-dihydroxyphenyl)ethanone (Standard), 2-Chloro-1-(3,4-dihydroxyphenyl)ethanone, 95%. Offered by: Chemat, Mikromol, Ambeed, MedChemExpress, Fluorochem. Available pack sizes: 5g, 10g, 25g, 100g, 500g, 1kg, 5kg, 25mg.