Buyer: P toluene sulfonamide cas: 70 55 3 (other names: ptsa, para toluene sulfonamide, p toluene sulphonamide, 4 methyl benzenesulfonamide, 4 toluenesulfonamide), p toluene sulfonyl chloride cas:98 59 9 (other names: ptsc; para sulfonyl chloride;tosyl chloride; 4 toluene sulfochloride; 4 methylbenzenesulfonyl chloride; p toluenesulfonyl chloride; toluene 4 sulfonyl chloride; 4 toluolsulfonyl chloride; p tosyl chloride, p toluene sulfochloride, 4 toluenesulfonic acid, chloride)o/p toluene sulfonamide cas:1333 07 9 (other names: optsa; o/p toluene sulfonamide; o/ptsa; o,p toluene sulfonamide; toluenesulphonamide;mixed isomers), 4 hydroxybenzaldehyde cas: 123 08 0 (other names: phba; p hydroxybenzaldehyde; 4 formylphenol), ortho toluene sulfonamide cas: 88 19 7 (other names: o toluene sulfonamide o toluenesulphonamide ;otsa; 2 methyl benzene sulfonamide, 2 methylbenzene 1 sulfonamide; 2 toluene suldonamide; ortho tolu