Appearance: white crystalline powder
Specific rotation[a]D20: -84.3°～－86.0°
Chloride(Cl): 0.05% max
Ammonium(NH4): 0.02% max
Sulfate(SO4): 0.03% max
Iron(Fe): 30ppm max
Heavy metals(Pb): 15ppm max
Other amino acids: Conforms
Loss on drying: 0.40% max
Residue on ignition: 0.40% max
Storage: 2 years in seal and shading place
L-Proline 147-85-3 is a biosynthetically derived from the L-glutamate. it is used in a Michael addition of dimethyl malonate to ɑß-unsaturated aldehydes as well as a catalyst in asymmetric aldol cyclization. L-Proline is also a precursor of hydroxyproline in collagen.
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