21-dicarboxylic acid esters of 16.alpha.,17.alpha.-acetal...

21-esters de la triamcinolone et leur procede de preparation

21-esters of 14-hydroxy-11-desoxycorticosterone

21-esters of pregnenes of tertiary acids

21-fluoro-.delta.1,4-pregnadiene-11-oxygenated-17...

21-hemi-diglycolates of 3:20-dioxo-21-hydroxy-pregnane...

21-heterocyclic-4-azasteroid derivatives as androgen...

21-hexahydrobenzoate des hormones corticosurrenales

21-hydroxy-20-ketals of the pregnane series

21-m-sulfobenzoate de triamcinolone et ses derives...

21-mercapto-steroids of the pregnane series and a process...

21-nitrogen substituted steroids of the pregnane series and...

21-norrapamycin

21-phosphate of cortical hormones

21-piperazine derivatives of hydrocortisone and prednisolone

21-pyridinium salts of cortisones

21-semi-tetrahydro-phthalate esters of pregnane compounds

21-substituted 17-aza-steroides and salts thereof and...

21-substituted 17.alpha.,21-dioxy steroids and processes for...

21-substituted 6-chloro-16, 17-isopropylidene-dioxypregna-4,...