Description N-CBZ-DL-Histidine, 99+%, 5g For Research & Development Not for drug, human, animal, or food use Certificate of Analysis: Appearance (Color) White Appearance (Form) Powder Assay (TLC) 99+% Assay (Elemental Analysis) [C] 58.12% [H] 5.22% [N] 14.52% Infrared Spectrum Conforms to structure Melting Point 206-210°C CAS: 19728-57-5 FORMULA: C14H15N3O4