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L-Cysteine base 52-90-4 L-Cysteine base 52-90-4

L-Cysteine base 52-90-4
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Basic information of  L-Cysteine base

Name

 L-Cysteine base

Alias

 H-CYS-OH; H-Cys-OH; CYSH; FEMA 3263; Cystein;
L-Cysteine; E 920; L-Cys; CYSTEINE; (R)-2-Amino-3-mercaptopropionic acid;
CYS; Thioserine

CAS NO.

52-90-4

Molecular Formula

C3H7NO2S

Molecular Weight

121.15800

Quality Standard

98% min; AJI92, USP

Grade Standard

Food grade, Cosmetic grade, Medicine grade

Package Size

25kg/drum

 Use of  L-Cysteine base

  • L-Cysteine is widely used in fields of medicine, food processing, biological study, materials of chemical industry and so on.
  • Used in the cure of liver disease, antioxidant and antidote
  • Also used in cosmetic. It promotes the form of glutelin and prevents from getting ageing.

COA of  L-Cysteine base

 ITEMS  

 SPECIFICATION  

 DESCRIPTION  

 WHITE CRYSTALS OR CRYSTALLINE POWDER  

 IDENTIFICATION  

 INFRARED ABSORPTION SPECTRUM  

 SPECIFIC ROTATION[α]D20°  

 +8.3°-- +9.5°  

 STATE OF SOLUTION  

 ≥95.0%  

 CHLORIDE(Cl)  

 ≤0.040%  

 AMMONIUM(NH4)  

 ≤0.02%  

 SULFATE(SO4)  

 ≤0.030%  

 IRON(Fe)  

 ≤10PPM  

 HEAVY METALS(Pb)  

 ≤10PPM  

 ARSENIC(As2O3)  

 ≤1PPM  

 OTHER AMINO ACIDS  

 CHROMATOGRAPHICALLY NOT DETECTABLE  

 LOSS ON DRYING  

 ≤0.5%  

 RESIDUE ON IGNITION (SULFATED)  

 ≤0.1%  

 ASSAY  

 98.0%-101.0%  

 PH  

 4.5-5.5  

 PARTICLE SIZE  

 100MESH  

 CONCLUSION:CONFORM WITH AJI92 /USP25  

 


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MORE_DETAIL L-Cysteine base 52-90-4

Basic information of  L-Cysteine base

Name

 L-Cysteine base

Alias

 H-CYS-OH; H-Cys-OH; CYSH; FEMA 3263; Cystein;
L-Cysteine; E 920; L-Cys; CYSTEINE; (R)-2-Amino-3-mercaptopropionic acid;
CYS; Thioserine

CAS NO.

52-90-4

Molecular Formula

C3H7NO2S

Molecular Weight

121.15800

Quality Standard

98% min; AJI92, USP

Grade Standard

Food grade, Cosmetic grade, Medicine grade

Package Size

25kg/drum

 Use of  L-Cysteine base

  • L-Cysteine is widely used in fields of medicine, food processing, biological study, materials of chemical industry and so on.
  • Used in the cure of liver disease, antioxidant and antidote
  • Also used in cosmetic. It promotes the form of glutelin and prevents from getting ageing.

COA of  L-Cysteine base

 ITEMS  

 SPECIFICATION  

 DESCRIPTION  

 WHITE CRYSTALS OR CRYSTALLINE POWDER  

 IDENTIFICATION  

 INFRARED ABSORPTION SPECTRUM  

 SPECIFIC ROTATION[α]D20°  

 +8.3°-- +9.5°  

 STATE OF SOLUTION  

 ≥95.0%  

 CHLORIDE(Cl)  

 ≤0.040%  

 AMMONIUM(NH4)  

 ≤0.02%  

 SULFATE(SO4)  

 ≤0.030%  

 IRON(Fe)  

 ≤10PPM  

 HEAVY METALS(Pb)  

 ≤10PPM  

 ARSENIC(As2O3)  

 ≤1PPM  

 OTHER AMINO ACIDS  

 CHROMATOGRAPHICALLY NOT DETECTABLE  

 LOSS ON DRYING  

 ≤0.5%  

 RESIDUE ON IGNITION (SULFATED)  

 ≤0.1%  

 ASSAY  

 98.0%-101.0%  

 PH  

 4.5-5.5  

 PARTICLE SIZE  

 100MESH  

 CONCLUSION:CONFORM WITH AJI92 /USP25  

 

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