9-methoxy-9-borabicyclo[3.3.1]nonane

9-Methoxy-9-borabicyclo[3.3.1]nonane (CAS 38050-71-4), commonly referenced as 9-MeO-9-BBN or B-methoxy-9-BBN, is a stabilized organoborane reagent used in synthetic chemistry.

Where is 9-methoxy-9-borabicyclo[3.3.1]nonane used?

• Pharmaceutical synthesis: precursor to boronate esters and boronic acids for Suzuki-Miyaura cross-coupling steps
• Contract research and process chemistry: building complex carbon frameworks where regioselectivity is critical
• Biotechnology: preparation of boron-tagged intermediates for probe synthesis and labeling chemistry
• Industrial cleaning: catalyst precursor in boron-based catalytic systems
• It also serves in specialized surface-treatment or polymerization-adjacent processes.

Good to know: Buyers should confirm purity by NMR or GC assay per batch documentation from the manufacturer.

Commercial specifications

• Liquid or solution in organic solvents such as THF or hexanes
• Concentration typically specified by the supplier
• Research quantities through multi-kilogram lots