Amino Ethyl Carbazole referred to as C9H11N2, is an organic compound with the chemical formula C9H11N2. This chemical is known for its applications in the field of chemistry, specifically in analytical and research areas. It is used in certain color reactions in analytical chemistry. It can form colored complexes with particular compounds, aiding in the detection and quantification of these compounds. Amino Ethyl Carbazole is also used in histological staining techniques, mainly in the field of biology and medicine. It can react with certain substances to make color changes that help picture cellular structures under a microscope.