Molecular formula:C4H7NO4Molecular weight:133.10Properties:white crystal or crystalline powder.Specification:-Quality standard:AJ192 , FCCIV, AJI97Structural formula:ItemStandardAssay99.0100.0Light transmittance≥98.0Specific rotary power [α]D20+24.8°+25.8°pH2.53.5Loss on dry≤0.20Residue on ignition≤0.1Chloride≤0.02Sulfate≤0.03Arsenic salt ppm≤1Heavy Metals ppm≤10Ferric salt ppm≤10Ammonium salt %≤0.05Other amino acidsmeet the requirements