Betamethasone 21-sulfate and 21-phosphate

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

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

21-Sulfuric acid or 21-orthophosphoric acid ester sodium salts of prednisolone or 9.alpha.-fluoro-16.beta.-methylprednisolone

Corticosteroid 21-sulfates and 21-phosphates

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

Antibiotic tetracycline complexes

Catalytic dehalogenation, alone or with simultaneous reduction, of 11a-halo-6-deoxy-6-demethyl, 6-methylenetetracyclines by hydrazine

Methacycline and doxycycline from 11a-chloro-6-deoxy-6-demethyl-6-methylenetetracycline

Purification of 6-.alpha.-deoxy-5-hydroxytetracycline

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

Palladium-active carbon hydrogenation catalyst