| CAS No.: | 52-90-4 |
|---|---|
| Formula: | / |
| EINECS: | 200-158-2 |
| Packaging Material: | Plastic |
| Storage Method: | Normal |
| Shelf Life: | >12 Months |
| Samples: |
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| Customization: |
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Introduction:L-Cysteine, an amino acid commonly found in living organisms. Soluble in water, acetic acid and ammonia, insoluble in ether, acetone, ethyl acetate, benzene, carbon disulfide and carbon tetrachloride. In neutral and weakly basic solutions can be oxidized to cystine by air.
Application:
1) Mainly used in medicine, cosmetics, biochemical research and other aspects.
2) Used in bread, to promote the formation of gluten and promote fermentation, mold, prevent aging.
3) Used in natural juices to prevent vitamin C from oxidizing and to prevent the juices from turning brown.
4) The product has a detoxification effect, can be used for acrylonitrile poisoning, aromatic acidosis.
5) It is also used to prevent radiation damage to the body and is a drug for the treatment of bronchitis, especially as a expectorant (mostly in the form of acetyl l-cysteine methyl ester).
6) Cosmetics mainly used for beauty water, perm fluid, sun - proof skin care cream.
COA:
| Analytical Items | Standard |
| Appearance | White crystals or crystalline powder |
| Assay | 98.0~101.0% |
| pH value | 4.5~5.5 |
| Specific optical rotation[a]D20° | +8.3o~ +9.5o |
| State of solution (Transmittance) | ≥95.0% |
| Loss on drying | ≤0.5% |
| Residue on ignition | ≤0.1% |
| Chloride (Cl) | ≤0.04% |
| Sulfate (SO4) | ≤0.03% |
| Ammonium (NH4) | ≤0.02% |
| Iron (Fe) | ≤0.001% |
| Heavy metals (Pb) | ≤0.001% |
| Arsenic | ≤0.0001% |
| CAS | |
| 56-40-6 | Glycine |
| 63-68-3 | L-Methionine |
| 63-91-2 | L-Phenylalanine |
| 72-19-5;6028-28-0 | L-Threonine |
| 73-22-3 | L-Tryptophan |
| 147-85-3 | L-Proline |
| 56-89-3 | L-Cystine |
| 71-00-1 | L-Histidine,free base; L-HIS = H-His-OH; (S)-2-Amino-3-(4-imidazolyl)propionic acid~H-His-OH; L-Histidine Base; H-His-OH; His |
| 74-79-3 | L-Arginine(Base) |
| 1119-34-2 | L-Arginine HCL |
| 372-75-8 | L-Citrulline |
| 73-32-5 | 2-Amino-3-methylvaleric acid; (2S)-2-Amino-3-methylpentanoic acid; (2S,3S)-(+)-Isoleucine; Isoleucine; L-2-Amino-3-methylvaleric Acid; L-(+)-Isoleucine; L-ISOLEUCINE SIGMA GRADE |
| 14007-45-5 | Potassium L-Aspartate |
| 56-84-8 | L-Aspartic Acid,(S)-Aminosuccinic Acid |
| 52-90-4 | L-Cysteine |
| 7048-04-6 |
L-Cysteine.HCL.H2O |
| 52-89-1 | L-Cysteine monohydrochloride |
| 61-90-5 | L-Leucine;(S)-2-Amino-4-methylpentanoic acid; L-Leucine 99+ %; H-Leu-OH; L-Leu; L(+)LEUCINE |
| 56-45-1 | L-Serine;Ser;L-2-aminohydroxypropionic acid;L-β-hydroxyalanine |
| 56-41-7 | L-Alanine;L-alanine-12C3; 2-Aminopropanoic Acid; H-Ala-OH~L-2-Aminopropionic acid; Ala; |
| 6893-26-1 | D-Glutamic acid |
| 673-06-3 | D-phenylalanine |
| 153-94-6 | D-Tryptophan |
| 344-25-2 | D-Proline |
| 640-68-6 | D-Valine |
| 1783-96-6 | D-Aspartic Acid |
| 312-84-5 | D-Serine |
| 338-69-2 | D-Alanine |
| 59-51-8 | DL-Methionine |
| 302-84-1 | DL-Serine |
| 537-55-3 | N-Acetyl-L-Tyrosine |
| 616-91-1 | N-Acetyl-L-Cysteine |
| 1188-21-2 | N-Acetyl-L-leucine |
| 3184-13-2 | L-Ornithine HCL |
| 60-18-4 | L-Tyrosine;3-(4-Hydroxyphenyl)-L-alanine; H-Tyr-OH; L-tyrosine,99+% (98% ee/glc); L-tyrosine free base cell culture*tested; L-tyrosine plant cell culture tested; L-Tyrosine, Free Base; tyrosine usp; Tyr |
| 56-87-1 | L-Lysine base |
| 10098-89-2,657-27-2 | Lysine, hydrochloride |
| 56-86-0 | L-Glutamic Acid |
| 72-18-4 | L-Valine |
| 56-85-9 | L-Glutamine |
| 107-35-7 | Taurine |
| 632-20-2 | D-Threonine |
| 157-06-2 | D-Arginine |
| 51-35-4 | L-Hydroxyproline |
| Goods weight |
Packing |
Shipping method |
Lead-time |
| 1-50kg |
Below 5kg Use Foil bag;5-25kg use two layer PP bag,then into master carton or cardboard drum |
International express |
1~3 days after your payment |
| 100-200kg |
25kg/drum,use two layer PP bag,then into cardboard drum |
Air shipping Sea Shipping |
3~5 days after your payment |
| Over 500kg |
25kg/drum,use two layer PP bag,then into cardboard drum |
Sea shipping |
5~10 days after your payment |
Q1: Can I get some free sample?
A: Yes, we offer free sample to client and you only need to pay the fright.
Q2: Could you accept customzied order?
A: Yes, we accept customized service according your requests, you can communicate with sales manager to know more details.
Q3: When the product can be delivery?
A: We normal delivery the product within 2-4 days, the more details will inform to you by our sales manager.
Q4: Could i get certificate of analysis (COA) about product?
A: Of course, please contact us to get it.
Q5: Is there any discount?
A:Yes, we can give you discount, but it depends on your quantity.
Suppliers with verified business licenses
Audited Supplier 
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