CAS 5397-34-2 appears in our catalog under these names: 2-((4-Hydroxyphenyl)sulfonyl)phenol, 96%, 2-((4-Hydroxyphenyl)sulfonyl)phenol, 95%, 95%, 24 Bisphenol S, >95% (HPLC), 2,4-Bisphenol S, 2,4'–Dihydroxydiphenyl Sulfone. Offered by: Fluorochem, Chemat, TRC, Dr. Ehrenstorfer, GLPBio. Available pack sizes: 5g, 25g, 100g, 500g, 10g, 2,5g, 250mg, 100mg.