L-CYSTINE For Biochemistry

(R,R)-3,3'-Dithiobis(2-aminopropionicacid)

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Article No.
03145
Grade
For Biochemistry
Purity
98.5%
CAS No.
56-89-3
Molecular Formula
C6H12N2O4S2
Molecular Weight
240.30
H.S. Code
2930.9040
Shelf Life
60 Months
MSDS
 

 

Physical Properties

Physical state at 20 °C
Solid
Colour
Colorless crystalline
Melting point/ Freezing point [°C]
> 240 °C
Solubility in water [% weight]
Soluble in water

Packings

  • 1PW1200060

    25 g (00025)

  • 1PW1200200

    100 g (00100)

  • 1PW1200750

    500 g (00500)

 

Specifications

Appearance White to off white powder
Assay 98.5 - 101%
Specific optical rotation ([α]20/D; 20 g/L in 1 mol/L HCl; on dried substance) -218 to -224°
Chloride (Cl) Max 0.05%
Sulphate (SO4) Max 0.03%
Ammonium (NH4) Max 0.02%
Ninhydrin positive substance Max 0.2%
Loss on drying (at 110°C) Max 0.5%
Sulphated ash Max 0.1%
Iron (Fe) Max 0.002%
Lead (Pb) Max 0.001%

Revision Date : 07-Mar-2018
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