Grade Standard Reagent Grade, Technical Grade 4-Methylindole CAS 16096-32-5 CAS Min % 98.5 CAS Max % 100.0 Assay Percent Range 99% Molecular Formula C9H9N Formula Weight 131.18 MDL Number MFCD00005668 Chemical Name or Material 4-Methylindole, 99% Assay ≥98.5%