What are the main uses of 4-Methoxybenzenediazonium tetrafluoroborate (CAS: 459-64-3)?

4-Methoxybenzenediazonium tetrafluoroborate is primarily used in analytical chemistry for the quantitative analysis of alcohols, particularly in the field of organic synthesis. It functions as a coupling reagent in the synthesis of azo dyes and pigments. Additionally, it is employed in the preparation of arylboronic acids and in the generation of aryl diazonium salts.