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L-Serine

Molecular Formula: C3H7NO3

Molecular Weight: 105.09 

CAS No: 56-45-1

L-SerineCP2020EP11USP2023AJI92
Assay≥98.5%98.5-101.0%98.5-101.5%99.0-101.0%
PH5.5-6.5//5.2-6.2
Specific rotation[a]D20+14.0°-+15.6°+14.0°-+16.0°/+14.4°-+15.5°
Specific rotation[a]D25//+14.0°-+15.6°/
Transmittance(T430)≥98.0%//≥98.0%
Appearance of solution/clear & colorless ≤BY6//
Chloride(Cl)≤0.02%≤0.02%≤0.05%≤0.02%
Ammonium(NH4)≤0.02%≤0.02%/≤0.02%
Sulfate(SO4)≤0.02%≤0.03%≤0.03%≤0.02%
Iron(Fe)≤10PPM≤10PPM≤30PPM≤10PPM
Heavy metals(Pb)≤10PPM//≤10PPM
Arsenic≤1PPM//≤1PPM
Other amino acids≤0.50%/Individual impurities≤0.5%
Total impurities≤2.0%
conform
Ninhydrin-positive substances/Individual impurities≤0.20%
Total impurities≤0.5%
//
Loss on drying≤0.20%≤0.50%≤0.20%≤0.20%
Residue on ignition≤0.10%≤0.10%≤0.10%≤0.10%
Endotoxin<12EU/g<12EU/g<12EU/g/
Total plate count≤ 1000 CFU/g≤ 1000 CFU/g≤ 1000 CFU/g≤ 1000 CFU/g
Moulds & Yeasts≤ 100 CFU/g≤ 100 CFU/g≤ 100 CFU/g≤ 100 CFU/g