Food & Feed Additives
【CAS No.】52-90-4
【EINECS No.】200-158-2
【Other Name】Cystin;(CYS)2;Nephrin;h-(cys);l-cystin;1-cystine;L-CYSTINE;NSC 13203;Dicysteine;L-CYTISINE
【Specification】USP28
【Molecular Formula】C3H7NO2S
L-Cysteine mainly used in cosmetic aspect: for the preparation of sun cream, perfume and hair care shampoo; in pharmaceutical aspect: liver medicine, antidote and expectorant; in food aspect: bread fermentation accelerant and preservative
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ABOUT L-CYSTEINE
VIADD CHEMICAL company is one professional L-CYSTEINE supplier, distibutor and exporter from China, welcome get L-CYSTEINE price by email: sales@viaddchem.com
L-Cysteine is one of the 20 natural amino acids and, besides methionine,the only one which contains sulfur. It is a thiol-containing non-essential amino acid that is oxidized to form Cystine.
L-cysteine is an important precursor for antioxidants such as glutathione – a product metabolized in the liver. Glutathione is essential for the breakdown of toxins in the body, such as alcohol. L-cysteine is also the precursor for other important antioxidants that help ward off cancer by decreasing the incidence of cell mutation.
L-Cysteine is a non-essential amino acid that can be synthesized by the human body under normal physiological conditions if a sufficient quantity of methionine is available. L-Cysteine is commonly use d as a precursor in the food and pharmaceutical industries. L-Cysteine is used as a processing aid for baking, as an additive in cigarettes, as well as in the preparation of meat flavours.
L-Cysteine mainly used in cosmetic aspect: for the preparation of sun cream, perfume and hair care shampoo; in pharmaceutical aspect: liver medicine, antidote and expectorant; in food aspect: bread fermentation accelerant and preservative
【Basic Information】
【Chemical Name】L-Cysteine
【CAS No.】52-90-4
【EINECS No.】200-158-2
【Other Name】Cystin;(CYS)2;Nephrin;h-(cys);l-cystin;1-cystine;L-CYSTINE;NSC 13203;Dicysteine;L-CYTISINE
【Specification】USP28
【Molecular Formula】C3H7NO2S
【Formula Weight】121.16
【Appearance】White crystalline powder
【Chemical Properties】L-cysteine (chemical name, 2-amino-3-mercaptopropionic acid or mercapto alanine) is a mercapto-containing aliphatic neutral amino acid. It is colorless crystal with isoelectric point of 5.07, PK1 = 1.71, pK2 = 8.33, and pK3 = 10.78.
【Synonyms】(R)-2-Amino-3-mercaptopropanoic acid;3-mercapto-l-alanin;alpha-amino-beta-mercaptopropionicacid;alpha-Amino-beta-thiolpropionic acid;alpha-amino-beta-thiolpropionicacid;Cystein;half-cysteine;L-Alanine, 3-mercapto-
【Uses of VIADD L-Cysteine】
1. L-cysteine can be used as bread improver, nutritional supplements, antioxidants and color fixative. It can also be applied for curing acrylonitrile and aromatic acid poisoning, preventing radiation damage and treating bronchitis and phlegm. L-cysteine can absorb alcohol and convert it into acetaldehyde to alleviate a hangover.
2. L-cysteine can be used for the treatment of eczema, urticaria, freckles and other skin diseases. And its series products are widely used in medicine, food and cosmetics industry
3. L-cysteine can be used for biochemical research and as the antidote for hepatitis, liver poisoning, radiopharmaceutical poisoning, antimony poisoning, etc.
4. L-cysteine is mainly used for medicine, cosmetics, biochemical research and so on. It can be used in the bread material to accelerate the formation of gluten and to promote fermenting and depanning, as well as to prevent aging.
5. L-cysteine can be used as the receptor agonists of NMDA glutamate.
【Commercial Information】
【Packing】inner double layer plastic film, outer fiber can; 25kg/drum
【Shelf Life】2 years in seal and shading place
【Delivery】Within 15 days of order date
【Payment】T/T, D/P, L/C
【Origin】China
【Brand】VIADD
【Supplier】Shenyang Viadd Chemical Co.,Ltd.
【Price Email】sales@viaddchem.com
【Certificate】ISO,KOSHER,HALAL,GMP, MSDS, Material Data Sheet, Non GMO,Non Allergen
【Deliver Port】Tianjin/Qingdao
【Documents】Sales Contract, Commercial Invice, Packing List, Weight List, COA, , Cetificate of Origin, Healthey Certificate, FORM A, FORM E, Policy of Indusrance, B/L, Loading container photos, packing photos, shipping advice, etc
【Specificaiton of L-Cysteine】USP28
|
Item |
USP28 |
|
Assay |
99.0～100.5% |
|
pH |
4.5～5.5 |
|
Specific rotation[a]D020 |
+8.3°～+9.5° |
|
Chloride(Cl) |
≤0.02% |
|
Ammonium(NH4) |
≤0.02% |
|
Sulfate(SO4) |
≤0.03% |
|
Iron(Fe) |
≤10ppm |
|
Heavy metals(Pb) |
≤10ppm |
|
Arsenic |
≤1ppm |
|
Other amino acids |
Not detectable |
|
Loss on drying |
0.5% |
|
Residue on ignition |
≤0.10% |
【Functions of L-Cysteine】
1. Food grade: flour improver, nutritional supplement, antioxidants
2. Medicine grade: In pharmacy, Cysteine is used in the treatment of radioactive drugs poison, heavy metal poison, toxic hepatitis, serum sickness, and can prevent liver degeneration
3. Comestic grade: whiting skin, dissolving cutin, anti-aging. The component of cosmetics marcel extract
【L-Cysteine Chemical Properties】
Melting point: 220 °C (dec.)(lit.)
Alpha:8.75 º (c=12, 2N HCl)
refractive index: 8.8 ° (C=8, 1mol/L HCl)
FEMA: 3263 | L-CYSTEINE
storage temp: Store at RT.
Solubility: H2O: 25 mg/mL
Pka: 1.92(at 25℃)
Form: Solid
Color: White
PH: 4.5-5.5 (100g/l, H2O, 20℃)
Water Solubility: 280 g/L (25 ºC)
Sensitive: Air Sensitive
Merck: 14,2781
BRN: 1721408
Stability: Stability Stable, but may be air sensitive. Incompatible with oxidizing agents, bases.
CAS DataBase Reference : 52-90-4(CAS DataBase Reference)
NIST Chemistry Reference: L-Cysteine(52-90-4)
EPA Substance Registry System: L-Cysteine(52-90-4)
【L-Cysteine Preparation Products And Raw materials】
1.Raw materials: Ammonium hydroxide-->HYDROGEN SULFIDE-->Α-PROTEIN-->L-Cystine-->Tin granular
2. Preparation Products: 6-BROMOMETHYL-PTERIDINE-2,4-DIAMINE HBR-->N-Acetyl-cysteine-->L-Cysteine hydrochloride anhydrous-->Ranitidine hydrochloride-->L-Cysteine hydrochloride monohydrate-->D-Biotin-->Carbocistein-->Chiral 2，2-Disubstituted thiaprolinol derivatives-->Papain-->S-Carboxymethyl-L-cysteine
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