Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 68528-80-3, Whether you call it Disuccinimidyl Suberate, Disuccinimidyl Octanedioate or Suberic Acid bis(N-Hydroxysuccinimide Ester) you can be assured the Disuccinimidyl Suberate products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.