Crystal Violet lactone is an important functional dye for the production of pressure sensitive materials. It is a chemical intermediate , intermediates for thermal/carbonless Paper, used in medicine and biochemical research, a leuco dye..

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.