L-Pyroglutamic acid
 

Product sort: pharmaceutical intermediate and other fine chemicals
Molecular formula: C5H7NO3
Molecular weight:129.12
Appearance:White crystal
Specific Rotatory Power [α]D20: –10.5°to –12.3°
State of solution: not less than 98.5 to 100%
Chloride [CL]: Not more than 0.02%
Residue on ignition: Not more than 0.10%
Iron salt [Fe]: Not more than 10 ppm
Heavy metals [Pb]: Not more than 10 ppm
Arsenic salt: Not more than 1 ppm
Other amino acids: The color layer can not be detected.
Loss on drying: Not more than 0.50%
Assay: 98.5 — 101.0%
fnp: 160.1 to 161.2
Packing specification:25kg/pail, with the lining of two layers of polyethylene bag.

 
 
 

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