Description L-Proline, Reagent, 98.5-101.0%, 500g For Research & Development Not for drug, human, animal, or food use Certificate of Analysis: Appearance (Color) White Appearance (Form) Crystalline powder Assay 98.5-101.0% Solubility (Color) Colorless Solubility (Turbidity) 50 mg/ml, H2O – Clear Infrared Spectrum Conforms to structure CAS: 147-85-3 FORMULA: C5H9NO2