title: 23-keto-25-hydroxyvitamin D3 and 23-keto-1,25-dihydroxyvitamin D3: two new vitamin D3 metabolites with high affinity for the 1,25-dihydroxyvitamin D3 receptor.
mesh_terms: D000818:Animals; D001667:Binding, Competitive; D002117:Calcitriol / Q000031:analogs & derivatives / Q000302:isolation & purification / Q000378:metabolism*; D002645:Chickens; D002762:Cholecalciferol / Q000378:metabolism* / Q000494:pharmacology; D006887:Hydroxycholecalciferols / Q000302:isolation & purification / Q000378:metabolism*; D007668:Kidney / Q000187:drug effects / Q000378:metabolism*; D007700:Kinetics; D008297:Male; D013058:Mass Spectrometry; D018167:Receptors, Calcitriol; D011987:Receptors, Steroid / Q000187:drug effects / Q000378:metabolism*; D013329:Structure-Activity Relationship
chemical_list: D006887:Hydroxycholecalciferols; D018167:Receptors, Calcitriol; D011987:Receptors, Steroid; D002762:Cholecalciferol; C034392:1,25-dihydroxy-23-oxo-vitamin D3; C036023:23-keto-25-hydroxyvitamin D3; D002117:Calcitriol