1107-90-0

Upstream product

• 750-59-4 3β-acetoxycholest-5-en-19-ol 
• 604-35-3 Cholesteryl acetate 
• 1258-35-1 (3S,5R,6R,8S,9S,10R,13R,14S,17R)-5-bromo-6-hydroxy-10,13-dimethyl-17-((R)-6-methylheptan-2-yl)hexadecahydro-1H-cyclopenta[a]phenanthren-3-yl acetate 
• 1258-07-7 (3S,5R,6R,8S,9S,10R,13R,14S,17R)-5-bromo-13-methyl-17-((R)-6-methylheptan-2-yl)hexadecahydro-6,10-(epoxymethano)cyclopenta[a]phenanthren-3-yl acetate 

Downstream Products

• 83205-49-6 19-norcholest-5-en-3β-ol benzoate 
• 99677-98-2 (Z)-3-Phenyl-acrylic acid (3S,8R,9S,10R,13R,14S,17R)-17-((R)-1,5-dimethyl-hexyl)-13-methyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl ester 
• 99677-97-1 4-Methoxy-benzoic acid (3S,8R,9S,10R,13R,14S,17R)-17-((R)-1,5-dimethyl-hexyl)-13-methyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl ester 
• 73197-96-3 19,19-difluoroprevitamin D₃ 
• 73197-97-4 19,19-difluorotachysterol 

Relevant academic research and scientific papers

Synthesis of new C-19-functionalized cholesterols

A series of new derivatives of cholesterol bearing polar functional groups on carbon-19 were synthesized, including 19-oximino-, 19-amino-, 19- (methylimino)-, 19-(methylamino)-, 19-mercapto-, and 19-(methylthio) cholesterol, and 3β-hydroxycholest-5-en-19-oic acid, as well as an unusual cyclosterol, 5,19-cyclocholest-6-en-3β-ol.

Aliphatic Liquid Crystals, 6 - Cholesteric 19-Norcholesteryl Esters

19-Norcholesterol (6a) was prepared on a known route and esterified with 14 aliphatic and 3 aromatic acids.The aliphatic esters 6c - p and the anisate 6r exhibit cholesteric phases broader than those of the corresponding cholesteryl esters.This effect is caused by a lowering of the melting points which is explained with a less stable packing of the crystal lattices.