138091-51-7

Upstream product

• 107-31-3 Methyl formate 
• 571-22-2 5β-androstan-17β-ol-3-one 
• 521-18-6 Stanolone 
• 109-94-4 formic acid ethyl ester 

Downstream Products

• 86699-40-3 2-(N-methylanilinomethylene)-5α-androstan-17β-ol-3-one 
• 100152-29-2 17β-hydroxy-5α-androstan[3,2-c]isoxazole 
• 80651-65-6 17β-hydroxy-5α-androst-2-eno<2,3-d>isoxazole 

Relevant academic research and scientific papers

Identification of steroid isoxazole isomers marketed as designer supplement

The product Orastan-A from Gaspari Nutrition was analyzed for its steroid content. According to the labeling, it is supposed to contain "5a-Androstano[2,3-c]furazan-17b-tetrahydropyranol ether", also called furazadrol-THP ether. The GC-MS analyses of the

Synthesis and substance P receptor binding activity of androstano[3,2- b]pyrimido[1,2-a]benzimidazoles

Several heterosteroids containing a dihydroethisterone skeleton were prepared and shown to displace substance P in a receptor binding assay. Further biochemical (kinetic and Scatchard analyses) and pharmacological evaluation (substance P-induced plasma extravasation and salivation in the rat) of a representative example in this series (5a) established that these compounds are competitive antagonists at the substance P receptor.