Product description
L cysteine powder, also known as cysteine, is a non-essential amino acid in the human body. Amino acids are the constituent units of proteins, and proteins are the material basis of life. From humans to microorganisms, everything is composed of proteins. Proteins are composed of peptides, and the peptide chains of peptides are made up of amino acids. Different proteins are composed of peptide chains of amino acids in different sequences and lengths. Genes related to genetics are actually amino acid chains of different sequences.
L cysteine powder is closely related to cystine. Two molecules of cysteine form one molecule of cystine. Cysteine is relatively unstable and can easily be converted into cystine. Cystine can also be further reduced to cysteine. Both of these are sulfur-containing amino acids and play a role in the formation and detoxification of the skin. L-Cysteine exists in keratin, which is the main protein that constitutes nails, toenails, skin and hair. L-Cysteine can help produce collagen tissue and maintain the elasticity and texture of the skin.
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COA
| Items | Standard | Result |
| Appearance | White crystals or crystalline powder |
Complies |
| Identification | Meets the requirements | Complies |
| Specific Rotation[a]D20 |
+8.3°~+9.5° | +8.9° |
| State Of Solution |
≥95.0% | 98.6% |
| Chloride(C1) | ≤0.04% | <0.04% |
| Ammonium(NH4) | ≤0.02% | <0.02% |
| Sulfate(S04) | ≤0.030% | <0.030% |
| Iron(Fe) | ≤10ppm | <10ppm |
| Heavy Metals(Pb) |
≤10ppm | <10ppm |
| Arsenic(As203) | ≤1ppm | |
| Other Amino Acids |
≤1.0% | Complies |
| Loss On Drying | ≤0.5% | 0.28% |
| Residue On Ignition |
≤0.1% | 0.07% |
| Assay | 98.0~101.0% | 99.5% |
| PH | 4.5~5.5 | 5 |
| Conclusion | Conform with enterprise specification | |
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Density: 1.3±0.1 g/cm ³
Boiling point: 293.9±35.0 °C at 760 mmHg
Melting point: 220 °C (dec.)(lit.
Molecular formula: C3H7NO2S
Molecular weight: 121.158
Flash point: 131.5±25.9 °C
Precise mass: 121.019745
PSA 102.12000
LogP 0.23
Is NAC better than L-cysteine?
NAC may be less toxic and more soluble than l-cysteine itself, which is why NAC is often used in supplements instead of l-cysteine by itself.
What is n acetyl and L-cysteine?
Cysteine is an amino acid, a building block of proteins that are used throughout the body. When used as a supplement, it is usually in the form of N-acetyl-L-cysteine (NAC). The body makes this into cysteine and then into glutathione, a powerful antioxidant.
What are the benefits of L-cysteine?
L cysteine powder exhibits antioxidant properties that can enhance the antioxidant functions of the central nervous system (CNS).
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why choose us
Our Factory
Package
Shipping Methods
|
Transportation Time |
Shipping method |
Cargo weight requirements |
Advantage |
|
3-7 days |
DHL,Germany DHL,Germany DPD, |
Suitable for under 50kg. |
We have warehouses in Germany and California, USA, and customers in Europe and America can enjoy sending goods directly from these two places. |
|
7-15 days |
By Air |
Suitable for more than 50kg. |
|
|
15-60 days |
By Sea |
Suitable for more than 500kg. |
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