L-Carnosine 99%
L-Carnosine 99%
CAS Number：305-84-0
Molecular Formula：C9H14N4O3
Molecular Weight：226.23
Assay：99%
Standard：USP
Country of Origin：China
Shelf Life：2 Years
Product description:
1)L-Carnosine (beta-alanyl-L-histidine)is a dipeptide of the amino acids beta-alanine and histidine. It is highly concentrated in muscle and brain tissues.2)L-Carnosine and carnitinewere discovered by Russian chemist V.Gulevich.Researchers in Britain,South Korea,Russiaand other countries have shown that carnosine has a number of antioxidant properties that may be beneficial. Carnosine has been proven toscavenge reactive oxygen species (ROS) as well as alpha-beta unsaturatedaldehydes formed from peroxidation of cell membrane fattyacids during oxidative stress. Carnosine is also a zwitterion, a neutral molecule with a positive and negative end.
L-Carnosine Specification:
|
ITEMS |
STANDARDS |
|
Appearance |
White powder |
|
Color |
White to almost white |
|
Smell |
Odorless |
|
Identification |
Must comply |
|
Loss on Drying |
NMT 1.0% |
|
Heavy Metals |
NMT 10ppm |
|
Arsenic |
NMT 1ppm |
|
Lead |
NMT 3ppm |
|
Cadmium |
NMT 1ppm |
|
Mercury |
NMT 0.1ppm |
|
Residue on Ignition |
NMT 0.1% |
|
Specific Rotation |
+20.0°~ +22.0° |
|
Melting Point |
250°C ~ 265°C |
|
PH(in 2% water) |
|
|
L-Histidine |
NMT 1.0% |
|
β-Alanine |
NMT 0.1% |
|
Total Aerobes Counts |
NMT 1000cfu/g |
|
Yeast & Molds |
NMT 10cfu/g |
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