2-Aza-ε-cAMP serves as a multifunctional dye, which is instrumental in biological experiments. These dyes facilitate the observation and analysis of cell structures, enable tracking of biomolecules, and assist in evaluating cell functions. They also distinguish among cell types, detect specific biomolecules, explore tissue pathology, and monitor microorganisms. Their utility extends beyond basic scientific research to encompass a broad spectrum of clinical diagnostics. Additionally, dyes are prevalent in traditional industries like textile dyeing and are gaining traction in emerging sectors, including functional textile processing, food pigments, and dye-sensitized solar cells.