Separation of .alpha.-6-deoxytetracyclines from reaction mixtures

Doxycycline alkali metal polyphosphate complex with improved pharmacological properties

Doxycycline alkali metaphosphate complexes

Tetracycline derivatives

alpha.-6-Deoxytetracyclines from anhydrotetracyclines

Corticosteroid 21-sulfate and phosphate esters

Biological transformation of anhydrotetracyclines to 6-deoxytetracyclines

Betamethasone

Gently and selectively acting palladium on carbon supports as hydrogenation catalysts

16.beta.-Methyl-17-hydroxypregna-1,4,9(11)-triene-3,20-dione

Polymetaphosphate complexes of .alpha.-deoxy-5-hydroxytetracycline

16.beta.-Methyl-9.alpha.-fluoro steroids