147832-98-2

Upstream product

• 142886-20-2 methyl (22E)-3β,11α-diacetoxychola-5,16,22-trien-24-oate 
• 142886-25-7 11α-acetoxy-3β-(tert-butyldimethylsiloxy)-25-hydroxy-4'-phenyl-5,8-<1,2>epi<1,2,4>triazolo-5α,8α-cholest-6-ene-3',5'-dione 
• 147832-99-3 3β-(tert-butyldimethylsiloxy)-11α,25-dihydroxy-4'-phenyl-5,8-<1,2>epi<1,2,4>triazolo-5α,8α-cholest-6-ene-3',5'-dione 
• 142886-22-4 methoxymethyl 3β,11α-bis(methoxymethoxy)chol-5-en-24-oate 
• 132787-55-4 3β-(tert-butyldimethylsiloxy)-25-hydroxycholest-5-ene-11α-yl acetate 
• 132787-50-9 methyl 3β,11α-diacetoxychol-5-en-24-oate 
• 132787-57-6 (5Z,7E)-(3S)-3-(tert-butyldimethylsiloxy)-9,10-secocholesta-5,7,10(19)-triene-11α,25-diol 
• 132787-56-5 3β-(tert-butyldimethylsiloxy)cholesta-5,7-diene-11α,25-diol 
• 142886-24-6 3β,11α-bis(methoxymethoxy)cholesta-5,24-diene 
• 132787-51-0 3β,11α-bis(methoxymethoxy)chol-5-en-24-al 
• 132787-54-3 3β-(tert-butyldimethylsiloxy)cholest-5-ene-11α,25-diol 
• 142886-23-5 3β,11α-bis(methoxymethoxy)chol-5-en-24-ol 
• 142886-19-9 <17(20)Z>-pregna-5,17(20)-diene-3β,11α-diyl diacetate 
• 142886-21-3 3β,11α-dihydroxychol-5-en-24-oic acid 

Relevant academic research and scientific papers

Syntheses of Novel 25-Hydroxyvitamin D3 Haptens having Chemical Bridges at the C-11α Position

The serum or plasma levels of 25-hydroxyvitamin D3 1a is useful for the evaluation of vitamin D status in various clinical or nutritional disorders.To obtain antibodies to compound 1a which are highly specific and useful for development of immunoassays, two novel haptenic derivatives, 11α-(3-carboxypropionyloxy)-25-hydroxyvitamin D3 2a and 11α-(4-carboxybutyryloxy)-25-hydroxyvitamin D3 2b were synthesized each in 21 steps from 11α-hydroxydehydroepiandrosterone 3.