Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 50-24-8, Whether you call it Prednisolone, 1 -2-Dehydrohydrocortisone , 11Beta -17alpha -21-Trihydroxypregna-1 -4-diene-3 -20-dione or Metacortandralone you can be assured the Prednisolone products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.