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L-CYSTINE For Biochemistry (R,R)-3,3′-Dithiobis(2-aminopropionicacid)
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Warranty 1 year
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Description
| 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 |
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 | ||||
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% |
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