Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 745-65-3, Whether you call it Prostaglandin E, (11α, -13E -15S)-11 -15-Dihydroxy-9-oxoprost-13-enoic Acid, 3-Hydroxy-2-(3-hydroxy-1-octenyl)-5-oxo-cyclopentaneheptanoic Acid or Prostaglandin E you can be assured the Prostaglandin E products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.