英文别名Halobetasol Propionate Impurity 1;Halobetasol Propionate 21-Hydroxy Analog;Pregna-1,4-diene-3,20-dione, 6,9-difluoro-11,21-dihydroxy-16-methyl-17-(1-oxopropoxy)-, (6α,11β,16β)-;Halobetasol Propionate Impurity 1Q: What is Halobetasol Propionate Impurity 1 Q: What is the CAS Number of Halobetasol Propionate Impurity 1;HalobetasolPropioteImpurity1