Appearance White crystal or crystalline powder Identification A:It responds to the tests for Tartrate. B:When ignited,it gradually decomposes emitting an odor resembling that of burning sugar. Assay(By C4H606) 99.7-100.5% Specific optical rotation +12~+13˚ Heay metals(asPb) 0.001% max Residue on ignition 0.1% max Loss on drying 0.5% max Sulfate 0.015% max Oxalate 0.035% max Arsenic(As) 0.0003% max Calcium 0.02% max Chlorides 0.01% max Transparency and Colority Passed test Solubility Passed test

D-Serine 312-84-5 C3H7NO3 99%min White crystalline powder,Assay:99%min

Appearance white or pale white crystalline powder or colorless crystals Identification As per USP33 Specific rotation +21.4°~ +23.6 ° Loss on drying 0.2% max Residue on ignition 0.1% max Sulfate 0.03% max Heay metals 0.002% max Chromatograhic purity As per USP33 Residual solvents As per USP33 Chloride 16.5-17.1% Assay 98.5-101.5%

Appearance White crystals or crystalline powder Assay 98.5~101.0% pH 10.5~12.0 Specific rotation[α]D20 +26.9°~ +27.9° Transmittance T430 98.0%min Chloride (Cl) 0.020% max Ammonium (NH4) 0.02% max Sulfate (SO4) 0.020% max Iron (Fe) 10ppm max Heay metals(Pb) 10ppm max Arsenic (As) 1ppm max Other amino acids 0.5% max Loss on drying 0.50% max Residue on ignition 0.10% max Pyrogen C=5

Appearance White crystal or crystalline powder Identification Infrared absorption Specific rotation +5.7~+6.8° Loss on drying 8.0-12.0% Residue on ignition 0.4% max Sulfate 0.03% max Iron 0.003% max Heay metals 0.0015% max Chromatographic impurity, as USP30(TLC) Individual impurity: 0.5% max Total impurity: 2.0% max Organic volatile impurities Meets the requirement Assay 98.5-101.5%

Appearance White crystals or crystalline powder Assay 98.0~101.0% pH 4.5~5.5 Specific rotation [α]D25 +8.3°~ +9.5° State of solution (Transmittance T430) ≥95.0% Chloride (Cl) ≤0.04% Ammonium (NH4) ≤0.02% Sulfate (SO4) ≤0.03% Iron (Fe) ≤10ppm Heay metals (Pb) ≤10ppm Arsenic (As) ≤1ppm Other amino acids Chromatographically not detectable Loss on drying ≤0.50% Residue on ignition ≤0.10%

Appearance White or almost white powder Assay 98% Identification Positive Specific optical rotation +13°- +16°     Water insoluble 0.1%max PH 5.8-7.0 Heay mentals 10ppm MAX Loss on drying 1% MAX

Calcium Glubionate 12569-38-9 C18H34CaO20 98%min "white or almost white crystalline powder--98%MIN "

Appearance White or almost white powder Identification A)IR B)TLC Specific optical rotation -10°～-14° Melting point 155-160℃ Loss on drying ≤ 1.0% Hevy metals ≤20ppm Residue on ignition ≤0.1% Assay ≥98.0%

Diacetone-D-glucose 582-52-5 C12H20O6 98%min White powder,98%min

Appearance White powder Assay(on dried basis) 98.0~102.0% Loss on drying 3~9% Sulfate ≤0.2% Chloride ≤0.05% Reducing substances ≤1.0% Heay metal ≤0.001% Lead ≤10mg/kg Arsenic ≤3mg/kg Organic volatile Meet the requirement

Appearance White or almost white crystalline powder Clarity Clear Specific optical rotatio +23˚ ~+29˚ Water content 5.0% max PH(250mg/ml in water) 4.5-7.0 Total Ash 0.1%max PH 1.0--3.0 Calcium