Used primarily as an intermediate in the synthesis of triphenylmethane dyes and photochromic compounds. It serves as a building block in organic synthesis, particularly in the preparation of protected aniline derivatives for pharmaceuticals and fine chemicals. Its trityl group acts as a protecting group for amines in peptide synthesis and nucleotide chemistry, allowing selective reactions at other functional sites. Also employed in the development of sensors and molecular switches due to its reversible redox behavior and stability under various reaction conditions.