40768-03-4

Upstream product

• 1639-43-6 androstenediol-3-acetate 
• 853-23-6 prasterone acetate 
• 1259-22-9 5-androstene-3β,17β-diol 3-acetate 17-p-toluene-δ-sulfonate 
• 100428-85-1 17α-hydroxyandrost-5-en-3β-yl 3-acetate 
• 98-88-4 benzoyl chloride 

Downstream Products

• 153261-53-1 3β-acetoxy-17α-benzoyloxyandrost-5-en-7-one 
• 53991-48-3 androst-5-ene-3β,17α-diyl diacetate 
• 846-46-8 androstanedione 
• 63-05-8 Androstenedione 
• 150054-85-6 3-oxo-5β-androstan-17α-yl cyclohexanecarboxylate 
• 150054-84-5 Cyclohexanecarboxylic acid (3S,5R,8R,9S,10S,13S,14S,17R)-3-hydroxy-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-17-yl ester 
• 150054-88-9 3α-hydroxy-5α-androstan-17α-yl 17-cyclohexanecarboxylate 
• 150054-87-8 5α-androstane-3β,17α-diyl 3-p-toluenesulfonate 17-cyclohexanecarboxylate 
• 150054-81-2 3-oxoandrosta-1,4-dien-17α-yl benzoate 
• 27833-18-7 17β-hydroxy-1,4-androstadien-3-one. 
• 103133-50-2 3-oxo-5α-androstan-17α-yl cyclohexanecarboxylate 
• 5692-03-5 5beta-Androstane-17alpha-ol-3-one 
• 571-24-4 5alpha-Androstane-17alpha-ol-3-one 
• 36025-82-8 3-oxoandrost-4-en-17α-yl benzoate 

Relevant academic research and scientific papers

PREPARATION OF UNLABELLED AND 3H>-LABELLED EPITESTOSTERONE AND ITS METABOLITES

Cold as well as 3H>-labelled substrates and metabolites IX-XI, XV, XVI, XX-XXII, XXIV, XXV and XXVIII were prepared by catalytic hydrogenation of epitestosterone (VIII) and Λ1-dehydroepitestosterone (XIII).The key step in the preparation of compound XXVIII was reaction of 3β-tosylates XXVI and XXX with potassium nitrite in dimethyl sulfoxide.