25-hydroxycholecalciferol-23-hydroxylase activity
Catalysis of the reaction: calcidiol + 2 H+ + O2 + 2 reduced [adrenodoxin] = (23S)-23,25-dihydroxycalciol + H2O + 2 oxidized [adrenodoxin].
GO:0062179
vitamin D 23-hydroxylase activity
is_a