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L-Cysteine Base L-Cysteine 52-90-4
L-Cysteine Base
Description:
Product Name: L-Cysteine Base
Molecular Formula: C3H7NO2S
Molecular Weight: 121.15
CAS No: 52-90-4
L cysteine is a kind of biological common amino acids in the body. As one of the alpha sulfur amino acids, encounter nitroprusside (nitroprusside) purple color (SH), found in many proteins, glutathione, and Ag +, Hg + and Cu + of metal ion can form insoluble mercaptide (mercapti - DE).R - S - M ', R - S - M "- S - R (M ', M" 1, 2 valence metal price). L-Cysteine is an amino acid common in vivo, can be transformed from the body of methionine, cystine can be transformed with each other.
Specifications:
L-Cysteine Base |
AJI92 |
Assay |
98.0~101.0% |
PH |
4.5~5.5 |
Specific rotation[a]D20 |
+8.3°~ +9.5° |
Specific rotation[a]D25 |
/ |
Transmittance(T430) |
≥95.0% |
Chloride(Cl) |
≤0.04% |
Ammonium(NH4) |
≤0.02% |
Sulfate(SO4) |
≤0.03% |
Iron(Fe) |
≤10ppm |
Heavy metals(Pb) |
≤10ppm |
Arsenic |
≤1ppm |
Other amino acids |
conforms |
Ninhydrin-positive substances |
/ |
Loss on drying |
≤0.50% |
Residue on ignition |
≤0.10% |
Function:
1. L-Cysteine has effective detoxification.
2.L-Cysteine can effectively prevent and treat radiation injury.
3. L-Cysteine can remove the skin melanin itself, change the nature of the skin itself.
4. L-Cysteine can improve the symptoms of inflammation and skin allergies.
5. L-Cysteine on horny skin disease is also effective hypertrophy.
6. L-Cysteine has a function to prevent biological aging.
7. L-Cysteine is a kind of natural amino acid, has many uses in food processing, it is mainly used for baking products, as a necessary component of dough improver
8. L-Cysteine is a kind of reductant, it can promote the formation of gluten, reduce the time needed for mixing and the energy required for medicinal.
Application:
L-Cysteine is widely used in fields of medicine, food processing, biological study, materials of chemical industry and so on. It’s used as raw materials for manufacturing N-Acetyl-L-Cysteine, S-Carboxymethyl-L-Cysteine, and L-Cysteine base, etc. Used in the cure of liver disease, antioxidant and antidote are a promotor for bread fermentation. It promotes the form of glutelin and prevents from getting aging. Also used in cosmetic.
Q&A:
1.Are you a manufacturer or trade company
We have our own factory which located in Zhejiang,China.Meanwhile,we also have many parter factorier,so we can supply many kinds of relative products with very competitive price and good quality.
2.How to start an order
After negoation and communication about the price,quantity,incoterm,etc.,you give me the order contract with stamp,then I sealed it ,send back to you,also give you the proforma invoice,you can arrange the payment according the PI.
3.What’s your payment terms
If sample,small amount: T/T in advance, ,Paypal.
If commercial order ,big amount: T/T in advance,L/C at sight.
4.Can I get a free sample
If this product is not very expensive,and you demand a small sample,we can supply free sample,but not including the shipping cost,you can provide a freight collect account or arrange the shipping cost by Paypal/Westunion.
5.What's the lead time
Generally we send out your order ASAP after payment,normally
small quanitity,3-5days.
big quanitity with stock,5-7days,
if without stock,we have to calculate the production period,then give you the lead tme.
6.How do you ship the order normally
If less than 50kg,will be shipped by express,such as FEDEX,DHL.
If above 50kg,we can ship it by air or sea
For very large quantity,ship it by sea will be the best choice.
7.How do you ensure the quality of your products
Strict QC with 6 steps testing from raw material purchase to finished product.
Meanwhile,we will responsible for the goods quality after be sold.
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