he present invention relates to novel vitamin D3 derivatives which have a carboxyl group or its ester group at the 22-position, processes for the preparation thereof, and antigens, which comprise said vitamin D3 derivative and an immunogenic carrier material, to be used for the preparation of antibodies for enzymeimmunoassay or radioimmunoassay and antibodies obtained therefrom.
The determination of such activated vitamin D3 compounds as 25-hydroxy vitamin D3, 24,25-dihydroxy vitamin D., etc. can be made satisfactorily according to the present invention.
本发明涉及在 22 位上有羧基或其酯基的新型
维生素 D3 衍
生物、其制备工艺、以及由上述
维生素 D3 衍
生物和免疫原载体材料组成的抗原,用于制备酶免疫测定或放射免疫测定的
抗体以及由此获得的
抗体。
根据本发明,可以令人满意地测定 25-羟基
维生素 D3、24,25-二羟基
维生素 D 等活化
维生素 D3 化合物。