CAS 338422-71-2 appears in our catalog under these names: 4-([3-Chloro-5-(trifluoromethyl)-2-pyridinyl]oxy)benzenesulfonyl chloride, 95%, 4-((3-Chloro-5-(trifluoromethyl)pyridin-2-yl)oxy)benzene-1-sulfonyl chloride, 95%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 250mg, 5g.