英文同义词:
Methylprednisolone Impurity 21;Pregna-1,4-dien-20-al, 11-hydroxy-6-methyl-3,20-dioxo-, (6α,11β)-;2-((6S,8S,9S,10R,11S,13S,14S,17S)-11-hydroxy-6,10,13-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl)-2-oxoacetaldehyde