Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 329-98-6, Whether you call it Phenylmethylsulfonyl Fluoride, &#945 or -Toluenesulfonyl Fluoride you can be assured the Phenylmethylsulfonyl Fluoride products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.