UVλmax (in nm) of BDP, its degradation products, and the reference steroid prednisone (1,4-pregnadiene-17α,21-diol-3,11,20-trione)
↵6-a Solvents: A, ethanol; B, ethanol/0.067 M phosphate buffer at pH 7.4 (3:4, v/v); and C, methanol/water/acetonitrile/acetic acid (309:146:44:1, v/v).
↵6-b ND, not determined.
↵6-c Literature λmax 238 nm in methanol (Herzoget al., 1962).