Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 303-43-5, Whether you call it Cholesteryl Oleate, 5-Cholesten-3Beta-ol 3-Oleate or Cholesteryl cis-9-Octadecenoate you can be assured the Cholesteryl Oleate products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.