2542-26-9

Basic information

• Product Name: 3-oxopregn-4-en-20-yn-17-yl acetate
• CAS NO: 2542-26-9
• Molecular Formula: C₂₃H₃₀O₃
• Molecular Weight: 354.4825
• Mol File: 2542-26-9.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 455.9°C at 760 mmHg
• Flash Point: 196.4°C
• Density: 1.13g/cm³
• Vapor Pressure: 1.69E-08mmHg at 25°C
• Refractive Index: 1.552
• CAS DataBase Reference: 3-oxopregn-4-en-20-yn-17-yl acetate(CAS DataBase Reference)
• NIST Chemistry Reference: 3-oxopregn-4-en-20-yn-17-yl acetate(2542-26-9)
• EPA Substance Registry System: 3-oxopregn-4-en-20-yn-17-yl acetate(2542-26-9)

Safety Data

• Hazardous Substances Data: 2542-26-9(Hazardous Substances Data)

Upstream product

• 434-03-7 levonorgestrel 
• 108-24-7 acetic anhydride 

Downstream Products

• 17308-02-0 17-acetoxy-17βH-pregn-4-ene-3,20-dione 

Relevant articles and documents

Neighboring Carbonyl Group Assisted Oxyacetoxylation of Propargylic Carboxylates with Retention of Chirality under Metal Free Condition

A metal-free oxyacetoxylation method of primary, secondary and tertiary propargylic carboxylates with retention of chirality was presented. The reaction proceeds through the intramolecular nucleophilic attack of the neighboring carbonyl group on an alkynyliodonium intermediate. The process is general with broad substrate scope and is amenable for application to a variety of propargyl carboxylates including those obtained from natural products. Insight into the mechanistic pathway by isotopic labelling (using H2O18 and D2O) and controlled experiments confirmed. (Figure presented.).