China Amino Acid L-Tyrosine Tyrosine CAS No: 60-18-4

Tests
Limits
Test results
DescriptionWhite crystals or crystalline powder
conforms
Identification(IR)concordant with the reference spectrum
conforms
SolubilityVery slightly soluble in water; insoluble in alcohol and in ether.
conforms
Assay(on dried basis)
98.5~101.5%
99.9%
25
Specific rotation[]D
-9.8°~-11.2°
-10.3°
Chloride(Cl)
≤0.04%
<0.04%
Sulfate(SO4)
≤0.04%
<0.04%
Iron(Fe)
≤30ppm
<30ppm
Related compoundsindividual impurity ≤0.5% total impurities≤ 2.0%
conforms
Loss on drying
≤0.30%
0.07%
Residue on ignition
≤0.40%
0.02%
Conclusion: Passed test according to the Standard of USP41.