7-Ethyl Tryptophol, Pharmaceutical Intermediates CAS No.:41340-36-7 1.Red to brown viscous substance; Assay: ≥75.0% Purity: ≥85.0% 2.Red to brown viscous substance; Assay: ≥90.0% Purity: ≥95.0% We can offer high quality Pharmaceutical Intermediates with competitive price.