Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 4419-39-0, Whether you call it Beclomethasone, 9&#945, -Chloro-16&#223, -methyl-1 -4-pregnadiene-11&#223, -17&#945 or -21-triol-3 -20-dione you can be assured the Beclomethasone products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.