Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 65208-41-5, Whether you call it Calcium Thioglycolate, Trihydrate, Thioglycolic Acid Calcium Salt or Mercaptoacetic Acid Calcium Salt (2:1) you can be assured the Calcium Thioglycolate, Trihydrate products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.