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L-CYSTEINE For Biochemistry

Product Code: 03140


Specifications

Appearance Colorless crystalline powder
Assay Min. 99%
Specific optical rotation ([α]20/D) +8.0° to +9.0°
UV absorbance Max. 0.5
Loss on drying (at 105°C; 4 hrs) Max. 0.3%
Chloride (Cl) Max. 0.002%
Sulphate (SO4) Max. 0.01%
Heavy metal (as Pb) Max. 0.001%
Ammonium (NH4) Max. 0.01%
Foreign amino acids Max. 0.5%
Other ninhydrin positive substances (as glycine) Max. 0.1%

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