- Product Detail
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L-Phenylalanine AJI97 USP2025 EP11 JP18 Appearance White crystals or crystalline powder White crystals White or almost white, crystalline powder , or shiny ,white flakes White crystals or crystalline powder ldentification Conform Conform IR:Conform to CRS Spectrum IR: Conform to CRS Spectrum State of solution
(Transmittance)Clear and colorless,
≥98.0%/ / / Specific rotation 
-33.5° ~ -35.0° / -35.5° ~ -33.0° (dried substance) -33.0° ~ -35.5° Optical rotation 
/ -32.7º ~ -34.7º / / Chloride ≤0.020% ≤0.05% ≤200ppm ≤0.021% Sulfate ≤0.020% ≤0.03% ≤300ppm ≤0.028% Ammonium ≤0.02% / ≤0.02% ≤0.02% Iron ≤10ppm ≤30ppm ≤10ppm / Heavy metals ≤10ppm / / ≤20ppm Arsenic ≤1ppm / / ≤2ppm Other amino acids Conform / / / Loss on drying ≤0.20% ≤0.3% ≤0.5% ≤0.30% Residue on ignition ≤0.10% ≤0.4% ≤0.1% ≤0.1% pH 5.4 ~ 6.0 5.4 ~ 6.0 / 5.3 ~ 6.3 Assay 98.5% ~ 101.0% 98.5% ~ 101.5% (on the dried basis) 98.5% ~ 101.0% (dried substance) ≥98.5% Related compounds / Individual impurities: ≤0.5% / Conform Total impurities: ≤2.0% Appearance of solution / / The solution is clear and not more intensely coloured than reference solution BY6 Clear and colorless Ninhydrin-positive
substances/ / Any ninhydrin-positive substance:
each impurity: ≤0.2%/ Total: ≤0.5%
L-Phenylalanine
CAS No. : 63-91-2
Molecular formular: C2H11NO2
Molecular weight: 165.19
Molecular formular: C2H11NO2
Molecular weight: 165.19
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