CAS:120-72-9 99%Molecular Formula: C8H7NMolecular Weight: 117.15EINECS: 204-420-7 Synonyms: FEMA 2593; INDOLE; BENZO(B)PYRROLE; 1-Azaindene; IndoleGr; 2,3-Benzopyrrole,OrBenzazole,Indole; INDOLE CRYSTALLINE GR; Indole-15N Indole CAS 120-72-9 is a white, shiny, scaly crystal that turns dark when exposed to air and light. At high concentrations, there is a strong unpleasant odor, and when highly diluted (concentration<0.1%), it appears as orange and jasmine like floral fragrances. Melting point 52-53 ℃, boiling point 253-254 ℃. Soluble in ethanol, ether, hot water, propylene glycol, petroleum ether, and most non-volatile oils, insoluble in glycerol and mineral oils.