Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 557-08-4, Whether you call it Zinc Undecylenate, 10-Undecanoic Acid Zinc Salt , Undecylenic Acid Zinc Salt , Zinc Undecenoate or Zinc Di(undec-10-enoate) you can be assured the Zinc Undecylenate products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.