CAS 6311-23-5 appears in our catalog under these names: 2-[(4-Methylbenzene)sulfonamido]benzoic acid, 95%, 2-(4-Methylphenylsulfonamido)benzoic acid 95%, 2-[(4-Methylbenzene)sulfonamido]benzoic acid, 95%, 95%. Offered by: Combi-blocks, Ambeed, Chemat. Available pack sizes: 1g, 5g, 250mg, 50mg, 100mg.