We have superior Pharmaceutical Intermediates products such as: Para toluene sulfonamide (PTSA) , Para toluene Sulfonyl Chloride (PTSC) , O/P-toluene sulfonamide(OPTSA) , 4-Hydroxybenzaldehyde(PHBA) , O-Toluene Sulfonamide , N-ethyl-o/p-toluene sulfonamide . If you need a specific offer, please send us your enquiry mentioning the quantity you are interested in and any information that you want to know and your requirements about the product, so we are able to give you our best price. We are looking forward to hearing from you! Our email address is riliyou at hotmail.com