L-Leucine 1) GMP, Kosher, ISO 2) CAS No.: 61-90-5 3) Assay: 98.5-101.0% 4) Quality Standard: CP2010, EP5, AJI92, USP24 ... [Molecular formula] C6H13NO2 [Molecular structure] [Molecular weight] 131.17 [CAS No.] 61-90-5 [Description] White crystals or crystalline powder [Specification] CP2010, EP5 ... Pb)≤10ppm≤10ppm≤10ppm≤15ppmArsenic≤1ppm ≤1ppm Other amino acids≤0.5%≤0.5%≤0.5% Loss on drying≤0.20%≤0.50%≤0 ...