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L-Cystine:
Properties:White crystal or crystalline powder, odorless, flavorless, almost insoluble in water or ethanol, soluble in diluted acid or basic hydroxide solutions.
COA of L-Cystine:
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Item
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Index
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Specific rotatory power[α] D20
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-215º -225º
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Clarity
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≥ 98.0%
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Ammonium salt[NH4]
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≤ 0.02%
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Chloride[CL]
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≤ 0.02%
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Residue on ignition
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≤ 0.10%
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Sulfate[SO4]
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≤ 0.02%
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Iron salt[Fe]
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≤ 10 ppm
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Heavy metal[Pb]
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≤10 ppm
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Arsenic salt
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≤1 ppm
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Other amino acid
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Color layer can not be checked out.
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Loss on drying
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0.20%
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Content
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98.5 -101.0%
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Function of L-Cystine:
1. Cystine is a crystalline, sulfur-containing amino acid, formed from two molecules of the amino acid cysteine.
2. It can be converted to cysteine by reduction and was discovered in 1810 but was not recognized as a component of proteins until 1899, when it was isolated from animal horn - it is particularly abundant in skeletal and connective tissues, hair and digestive enzymes.
3. L- Cystine helps strengthen the immune system, reduce damage from free-radicals, repair RNA-DNA in the cells and assimilation of vitamin B6. L-Cystine is closely related to the amino acid, L-Cysteine.
4. L-Cystine aids in preventing the side effects of chemotherapy and radiation.
5. It increases L-Glutathione levels in the lungs, liver, kidney and bone marrow.
6. L-Cystine also has an anti-aging effect on the body which can reduce the accumulation of age spots.
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Shipping Terms |
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By Express |
By Air |
By Sea |
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Suitable for under 50kg Fast: 3-7 days High cost Door to door service, easy to pick up the goods |
Suitable for more than 50kg Fast: 3-7 days High cost Port to port, professional broker needed |
Suitable for more than 500kg Slow: 7-45 days Low cost Port to port, professional broker needed |
1. Your inquiry related to our products or prices will be replied in 12hours.
2. Well-trained and experienced staffs to answer your enquires in fluent English.
3. All our products have high quality warranties.
4. Sample order can be delivered within 3 working days, small order 3-5working days, mass order 7-10working days.
5. Samples can be offered by free,customers just need to pay the freight.But the freight can be returned to our customer after he/she places formal order with us.
Qingdao Sigma Chemical Co.,Ltd is a global chemical industry manufacturers and suppliers of pharmaceuticals and intermediates, food and feed additives, herbal extracts, agrochemicals and fine chemicals etc.
The aim of Qingdao Sigma Chemical Co.,Ltd is a quality policy that "Elements in the system all have been satisfied, Personnel has been trained; Every batch of material is checked, Each procedure guarantees the quality; Every bag of our products is top grade, Service is thoughtful all the time, quality and reputation to increase market share and promote enterprise development. The quality, colors and forms of our products have reached a high level in related chemical industry, which relies on characteristic and advanced processing technology and it has gained a high and reliable reputation from customers at both quality and services.
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