L-Isoleucine is one of the popular food additives and ingredients in most countries, As a professional L-Isoleucine supplier and manufacturer, Foodchem International Corporation has been supplying and exporting L-Isoleucine from China for almost 15 years, please be assured to buy L-Isoleucine at Foodchem. Any inquiries and problems please feel free to send emails to us via, we will reply you within 1 working day.


  • Type
  • CAS No. 73-32-5
  • Qty in 20' FCL 10MT
  • Min. Order 500KG
  • Packaging 25kg/bag


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.


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



1, What kinds of certificates can you offer?

Foodchem is an ISO2008 9001 certified company, as for L-Isoleucine, we can offer HAPPC, KOSHER, HALAL Certificates, ect.

2, Is Foodchem a manufacturer or just a trading company?

Foodchem is both manufacturer and trading company, we are L-Isoleucine distributor, at the same time, we are manufacturer of other products.

3, What is the Min Order Quantity of L-Isoleucine?

Different products have different MOQ, for L-Isoleucine, the MOQ is 500kg.

4, What is the price of L-Isoleucine?

Foodchem is a famous supplier and manufacturer of L-Isoleucine in China, and has been corporate with many L-Isoleucine suppliers for several years, we can provide you with cost-effective L-Isoleucine.

5, How long shall we wait for your reply?

We can guarantee to reply your inquiries of L-Isoleucine in less than 24 hours in working days.

6, What kinds of transportation types can you provide?

Our main transportation methods include air transportation, land transportation and water transportation.

7, What kinds of payment terms can you accept?

The most commonly used payment terms are T/T, L/C, D/P, D/A, etc.

8, How long will I receive my good?

Foodchem has its own EDC warehouse in Shanghai, when your purchase order has been confirmed, inventory products will deliver within 1 week, other products delivery in 2 weeks.

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