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Shijiazhuang Jirong Pharmaceutical Co., Ltd.
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L-Tyrosine

CAS No.: 60-18-4
Molecular formular: C9H11NO3
Molecular weight: 181.19
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Product description
Parameters

L-Tyrosine

USP40

AJI92

EP6

Assay

98.5-101.5%

99.0-100.5%

99.0-101.0%

PH

/

5.0-6.5

/

Specific rotation[a]D20

/

-11.3°--12.1°

-11.0°—12.3°

Specific rotation[a]D25

-9.8°--11.2°

/

/

Transmittance(T430)

/

≥95.0%

/

Chloride(Cl)

≤0.04%

≤0.02%

≤0.02%

Ammonium(NH4)

/

≤0.02%

≤0.02%

Sulfate(SO4)

≤0.04%

≤0.02%

≤0.03%

Iron(Fe)

≤30PPM

≤10PPM

≤10PPM

Heavy metals(Pb)

≤15PPM

≤10PPM

≤10PPM

Arsenic

/

≤1PPM

/

Other amino acids

individual impurities≤0.5%
 total impurities≤2.0%

conform

/

Ninhydrin-positive substances

/

/

confirm

Loss on drying

≤0.3%

≤0.20%

≤0.50%

Residue on ignition

≤0.40%

≤0.10%

≤0.10%

 

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Shijiazhuang Jirong Pharmaceutical Co., Ltd.

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The No.8 of north of Huagong road,Circulation Chemical Industrial Zone,Shijiazhuang,Hebei,China

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