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L-Cystine (Cystine Acid) is not considered one of the 20 amino acids, L-Cystine (Cystine Acid) is a sulfur-containing derivative obtained from oxidation of cysteine amino acid thiol side chains. It functions as an antioxidant and protects tissues against radiation and pollution, slowing the aging process. It also aids protein synthesis. L-Cystine (Cystine Acid) is abundant in many proteins of skeletal tissues and skin, and found in insulin and digestive enzymes chromotrypsinogen A, papain, and trypsinogen.

| Pack Size | Price | USA Warehouse | Global Warehouse | Quantity |
|---|---|---|---|---|
| 500 mg | $41 | In Stock | In Stock | |
| 1 g | $48 | In Stock | In Stock | |
| 1 mL x 10 mM (in DMSO) | $48 | In Stock | In Stock |
| Description | L-Cystine (Cystine Acid) is not considered one of the 20 amino acids, L-Cystine (Cystine Acid) is a sulfur-containing derivative obtained from oxidation of cysteine amino acid thiol side chains. It functions as an antioxidant and protects tissues against radiation and pollution, slowing the aging process. It also aids protein synthesis. L-Cystine (Cystine Acid) is abundant in many proteins of skeletal tissues and skin, and found in insulin and digestive enzymes chromotrypsinogen A, papain, and trypsinogen. |
| Synonyms | Cystine Acid, cystine |
| Molecular Weight | 240.3 |
| Formula | C6H12N2O4S2 |
| Cas No. | 56-89-3 |
| Smiles | [C@H](CSSC[C@@H](C(O)=O)N)(C(O)=O)N |
| Relative Density. | 1.66 g/cm3. Temperature:20 °C. |
| Storage | In solvent: -80°C for 1 year | Shipping with blue ice/Shipping at ambient temperature. | ||||||||||||||||||||||||||||||
| Solubility Information | 0.1 M NaOH: 8.17 mg/mL (34.00 mM), Sonication is recommended. 0.1 M HCl: 2.50 mg/mL (10.40 mM), Sonication and heating are recommended. DMSO: Insoluble | ||||||||||||||||||||||||||||||
Solution Preparation Table | |||||||||||||||||||||||||||||||
0.1 M HCl/0.1 M NaOH
0.1 M NaOH
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Dissolve 2 mg of the compound in 100 μL DMSO
to obtain a stock solution at a concentration of 20 mg/mL . If the required concentration exceeds the compound's known solubility, please contact us for technical support before proceeding.
1) Add 100 μL of the DMSO
stock solution to 400 μL PEG300
and mix thoroughly until the solution becomes clear.
2) Add 50 μL Tween 80 and mix well until fully clarified.
3) Add 450 μL Saline,PBS or ddH2O
and mix thoroughly until a homogeneous solution is obtained.
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