103216-20-2

Basic information

• Product Name: 2'-phenyl-4-cholesteno<4,6-cd>pyrazol-3-one phenylhydrazone
• CAS NO: 103216-20-2
• Molecular Weight: 576.869
• Mol File: 103216-20-2.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 2'-phenyl-4-cholesteno<4,6-cd>pyrazol-3-one phenylhydrazone(CAS DataBase Reference)
• NIST Chemistry Reference: 2'-phenyl-4-cholesteno<4,6-cd>pyrazol-3-one phenylhydrazone(103216-20-2)
• EPA Substance Registry System: 2'-phenyl-4-cholesteno<4,6-cd>pyrazol-3-one phenylhydrazone(103216-20-2)

Safety Data

• Hazardous Substances Data: 103216-20-2(Hazardous Substances Data)

Upstream product

• 3464-61-7 6,β-bromo-4-cholesten-3-one 
• 100-63-0 phenylhydrazine 
• 104596-45-4 3β-acetoxy-cholest-4-en-6-one 
• 54339-68-3 4-cholestene-3,6-dione 

Relevant articles and documents

Reaction of Phenylhydrazine with α,β-Unsaturated Steroidal Ketones: Synthesis of Steroidal Pyrazoles

Reaction of 4-cholesten-6-one (I) with phenylhydrazine in the presence of acetic acid gives 2'-phenyl-4-cholestenopyrazole (V) whereas 6-oxo-4-cholesten-3β-yl acetate (II) and 4-cholestene-3,6-dione (III) afford the same pyrazole, 3-oxo-2'-phenyl-4-cholestenopyrazole (VI). 6β-Bromo-4-cholesten-3-one (IV) gives besides the pyrazole VI, 2'-phenyl-4-cholestenopyrazol-3-one phenylhydrazone (VII) which is also obtained by treating VI with phenylhydrazine.The structures are supported mainly by their spectral behaviour and chemical properties.Probable pathways for their formation have also been suggested.