(6alpha)-17,21-Dihydroxy-6-methylpregna-1,4-diene-3,11,20-trione 6-Methylprednisone 91523-05-6 NSC 63546 Prednisone, 6alpha-methyl- Pregna-1,4-diene-3,11,20-trione, 17,21-dihydroxy-6-methyl-, (6alpha)- Pregna-1,4-diene-3,11,20-trione, 17,21-dihydroxy-6alpha-methyl-