17,21-dihydroxy-16alpha-methylpregna-1,4,9(11)-triene-3,20-dione
地塞米松EP杂质E
CAS No. 13209-41-1
17,21-dihydroxy-16alpha-methylpregna-1,4,9(11)-triene-3,20-dione;16α-Methyl-9,11-dehydro Prednisolone;(16α)-17,21-Dihydroxy-16-Methylpregna-1,4,9(11)-triene-3,20-dione