D.K Pharma Chem Pvt. Ltd. Manufactures 4-Toluene Sulfonyl Chloride. D.K Pharma Chem Pvt. Ltd. Is an ISO 9001:2008 certified company that offers bulk drugs, intermediates and other speciality chemicals. The 4-Toluene Sulfonyl Chloride is an organic compound. This colorless, malodorous solid is a reagent widely used in organic synthesis. The 4-Toluene Sulfonyl Chloride is a derivative of toluene and contains a sulfonyl chloride [-SO2Cl] functional group.