87171-95-7

Upstream product

• 87080-69-1 22-Chlor-5α,8α-(4-phenyl-1,2-urazolo)-23,24-dinorchol-6-en-3β-yl-ethanoat 
• 4233-33-4 4-Phenyl-1,2,4-triazolidine-3,5-dione 
• 87080-68-0 22-Chlor-23,24-dinorchol-5-en-3β-ol 
• 87080-66-8 22-Chlor-23,24-dinorchol-4-en-3-on 
• 57-87-4 Ergosterol 
• 1108-03-8 ergosterol acetate 
• 28421-56-9 3β-acetoxy-5α,8α-(4-phenyl-1,2,4-triazolidine-3,5-dione-1,2-diyl)ergosta-6,22-diene 
• 87080-67-9 22-Chlor-23,24-dinorchola-3,5-dien-3β-yl-ethanoat 
• 74996-92-2 22-Chlor-23,24-dinorchol-5-en-3β-yl-ethanoat 
• 40736-33-2 (20S)-20-hydroxymethylpregn-4-en-3-one 

Relevant academic research and scientific papers

Synthesis of a New Vitamin D3 Hapten and Its Protein Conjugates

The synthesis of 25-(1-carboxymethoxy)-imino-3(S)-hydroxy-9,10-seco-27-norcholesta-5(Z),7(E),10(19)-triene, a new hapten of vitamin D3, has been carried out in ten steps from ergosterol. The hapten was conjugated to horseradish peroxidase and bovine serum albumin. Antibodies to 25-hydroxyvitamin D3 were obtained using the synthesized conjugates. An immunochemical system was developed for the quantitative determination of 25-hydroxyvitamin D3.