Purpurin is widely used as a natural dye in the textile industry, particularly for coloring fabrics like wool and silk. Its vibrant red hue makes it a popular choice for creating eco-friendly and sustainable textiles. In biological research, purpurin serves as a fluorescent stain to visualize and study cellular structures and processes under a microscope. Additionally, it has been explored for its potential in medicinal applications, including its antioxidant and anti-inflammatory properties, which may contribute to its use in developing therapeutic agents. Purpurin is also investigated for its role in metal chelation, making it useful in environmental cleanup efforts to remove heavy metals from contaminated sites.