China High Quality Pyrazine Ethanethiol Manufacturers - L-Isoleucine | 73-32-5 – COLORKEM
China High Quality Pyrazine Ethanethiol Manufacturers - L-Isoleucine | 73-32-5 – COLORKEM Detail:
Products Description
Isoleucine (abbreviated as Ile or I) is an α-amino acid with the chemical formula HO2CCH(NH2)CH(CH3)CH2CH3. It is an essential amino acid, which means that humans cannot synthesize it, so it must be ingested. Its codons are AUU, AUC and AUA.With a hydrocarbon side chain, isoleucine is classified as a hydrophobic amino acid. Together with threonine, isoleucine is one of two common amino acids that have a chiral side chain. Four stereoisomers of isoleucine are possible, including two possible diastereomers of L-isoleucine. However, isoleucine present in nature exists in one enantiomeric form, (2S,3S)-2-amino-3-methylpentanoic acid.
Specification
ITEM | STANDARD |
Appearance | White crystals or crystalline Powder |
Specific rotation | +38.6-+41.5 |
PH | 5.5-7.0 |
Loss on drying | =<0.3% |
Heavy metals(Pb) | =<20ppm |
Content | 98.5~101.0% |
Iron(Fe) | =<20ppm |
Arsenic(As2O3) | =<1ppm |
Lead | =<10ppm |
Other Amino Acids | Chromatographically not detectable |
Residue on ignition (Sulfated) | =<0.2% |
Organic Volatile impurities | Meets the requirements of pharmacopoeis |
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In an effort to finest meet up with client's requirements, all of our operations are strictly performed in line with our motto High High quality, Competitive Rate, Fast Service for China High Quality Pyrazine Ethanethiol Manufacturers - L-Isoleucine | 73-32-5 – COLORKEM , The product will supply to all over the world, such as: Poland, Cyprus, Romania, It is our customers' satisfaction over our products and services that always inspires us to do better in this business. We build mutually beneficial relationship with our clients by giving them large selection of premium car parts at marked down prices. We offer wholesale prices on all our quality parts so you are guaranteed greater savings.
By Ellen from Thailand - 2017.06.16 18:23
The factory technical staff gave us a lot of good advice in the cooperation process, this is very good, we are very grateful.
By Nicole from Uruguay - 2017.09.29 11:19