... formula: C5H9NO3 4. CAS No.: 51-35-4 L-HydroxyprolineChemical name: L-4-Hydroxy-pyrrolidine-2-carboxylic acidMolecular formula: C5H9NO3Molecular weight ... drying, %≤0.2Residue on ignition, %≤0.1Assay, %≥99.9Application:L-Hydroxyproline, a hydroxylated form of the amino acid proline, is ... a major component of collagen, L-Hydroxyproline can be used in the synthesis of ...