USD $1.00-10.00 / Kilogram
1) we are the sales represntative of the factory who produce this products . .
2) we are dealing in this field for more than ten years . we have experience to handle this
3) we have a laboratory which is fda approved can test the materials before export ,so we can gurantee you the quality
4) payment terms : we can accept t.t ,dp ,lc 60 days . more flexible .
5)we enjoy a good reputation in china and international market ,so you can trust us
packaging detail: | 25kg per drum or bag |
delivery detail: | prompt delivery |
1. leucine
2. cas#61-90-5
3. manufacture, iso
4. purity: 99%min.
5. packing: 25kg per drum
leucine
cas:61-90-5
1.introduce about leucine
a.properties
molecular formula |
c6h13no2 |
molar mass |
131.17 g mol−1 |
acidity (pka) |
2.36 (carboxyl), 9.60 (amino) |
b.description
as an essential amino acid, leucine cannot be synthesised by animals. consequently, it must be ingested, usually as a component of proteins. in plants and microorganisms, leucine is synthesised from pyruvic acid by a series of enzymes:
synthesis of the small, hydrophobic amino acid valine also includes the initial part of this pathway.
2. package
25kg per drum or bag
3.specification(aji97)
description |
white crystals or crystalline powder |
identification |
conforms |
state of solution |
≥98.0% |
specific rotation |
+14.9° ~ +16.0° |
ph |
5.5 ~ 6.5 |
chloride(cl) |
≤0.020% |
sulfate(so4) |
≤0.020% |
ammonium(nh4) |
≤0.02% |
heavy metals(pb) |
≤10ppm |
iron(fe) |
≤10ppm |
arsenic(as2o3) |
≤1ppm |
other amino acids |
conforms |
loss on drying |
≤0.20% |
residue on ignition |
≤0.10% |
pyrogen |
conforms |
assay |
98.5% ~ 100.5% |