Alizarin is a natural organic compound that is primarily known for its use as a dye. It is derived from the roots of the madder plant, which has been used for centuries to produce a vibrant red color. Alizarin was first isolated in the 19th century and became significant in the textile industry, where it was used to dye fabrics and create various shades of red. In addition to its applications in dyeing, alizarin has also found use in art and painting. It is a key component in some pigments, providing artists with a rich, deep red hue. Alizarin is valued for its lightfastness and stability, making it a popular choice for both traditional and modern artistic practices.