Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 71-58-9, Whether you call it Medroxyprogesterone Acetate, 17alpha-Hydroxy-6alpha-methylpregn-4-ene-3 -20-dione Acetate , Metipregnone or Methylacetoxyprogesterone you can be assured the Medroxyprogesterone Acetate products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.