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L-Tyrosine	CP2020	EP11	USP2023	AJI92
Assay	≥99.0%	99.0-101.0%	98.5-101.5%	99.0-100.5%
PH	5.0-6.5	/	/	5.0-6.5
Specific rotation[a]D20	-11.3°–12.1°	-11.0°–12.3°	/	-11.3°–12.1°
Specific rotation[a]D25	/	/	-9.8°–11.2°	/
Transmittance(T430)	≥95.0%	/	/	≥95.0%
Appearance of solution	/	clear & colorless≤Y7	/	/
Chloride(Cl)	≤0.02%	≤0.02%	≤0.04%	≤0.02%
Ammonium(NH4)	≤0.02%	≤0.02%	/	≤0.02%
Sulfate(SO4)	≤0.02%	≤0.03%	≤0.04%	≤0.02%
Iron(Fe)	≤10PPM	≤10PPM	≤30PPM	≤10PPM
Heavy metals(Pb)	≤10PPM	/	/	≤10PPM
Arsenic	≤1PPM	/	/	≤1PPM
Other amino acids	≤0.40%	/	Individual impurities≤0.5% Total impurities≤2.0%	conform
Ninhydrin-positive substances	/	Impurity A≤0.5% Each impurity≤0.2% Sum of impurities≤0.6%	/	/
Loss on drying	≤0.20%	≤0.50%	≤0.30%	≤0.20%
Residue on ignition	≤0.10%	≤0.10%	≤0.40%	≤0.10%
Endotoxin	<0.25EU/ml	<0.25EU/ml	<0.25EU/ml	/
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

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