China China High Quality Pyrazine Ethanethiol Manufacturers - L-Isoleucine | 73-32-5 – COLORKEM Manufacturer and Supplier

China High Quality Pyrazine Ethanethiol Manufacturers - L-Isoleucine | 73-32-5 – COLORKEM

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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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