L-Hydroxyproline Basic information 
Product Name: L-Hydroxyproline 
Synonyms: 4-Hydroxyproline;4-L-Hydroxyproline;delta-Hydroxyproline;Hypro;L-Proline, 4-hydroxy-, trans-;L-Proline,4-hydroxy-,trans;Ls-Hydroxyproline;Proline, 4-hydroxy- 
CAS: 51-35-4 
MF: C5H9NO3 
MW: 131.13 
EINECS: 200-091-9 
Product Categories: Nitrogen cyclic compounds;PHARMACEUTICALS;Amino Acids;Pyrrole&Pyrrolidine&Pyrroline;
Hydroxyproline [Hyp];Unusual Amino Acids;Biochemistry;Biological-modified Amino Acids;L-Amino Acids;Amino Acids 

Quality indicators:
 Content of 98.5% ~ 101.5%
 Specific rotation -74.0 ~ -77.0
 PH value 5.0 ~ 6.0
 ≥ 95.0% transmittance
 ≤ 0.020% Chloride
 Sulfate ≤ 0.020%
 ≤ 0.020% ammonium
 ≤ 0.001% heavy metals
 ≤ 0.001% ferric
 ≤ 0.0001% Arsenic salt
 Loss on drying ≤ 0.2%
 Residue on ignition ≤ 0.1%
 Use: flavoring agent; nutrient enhancer. Flavoring. Mainly used for fruit juice, soft drinks, nutrition drinks, etc.