Description DL-Tyrosine, 99.8%, 50g For Research & Development Not for drug, human, animal, or food use Certificate of Analysis: Appearance (Color) White Appearance (Form) Powder Assay (Elemental Analysis) [C] 59.6% [H] 6.1% [N] 7.7% Assay (TLC) 99.8% IR Spectrum Conforms to structure Solubility 5% in 1N HCl CAS: 556-03-6 FORMULA: 4-(HO)C6H4CH2CH(NH2)COOH