L-Leucine is one of the popular food additives and ingredients in most countries, As a professional L-Leucine supplier and manufacturer, Foodchem International Corporation has been supplying and exporting L-Leucine from China for almost 15 years, please be assured to buy L-Leucine 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. 61-90-5
  • Qty in 20' FCL 20MT
  • Min. Order 500KG
  • Packaging 25kg/bag


Leucine (abbreviated as Leu or L) is a branched-chain α-amino acid with the chemical formula HO2CCH(NH2)CH2CH(CH3)2. Leucine is classified as a hydrophobic amino acid due to its aliphatic isobutyl side chain. It is encoded by six codons (UUA, UUG, CUU, CUC, CUA, and CUG) and is a major component of the subunits in ferritin, astacin and other 'buffer' proteins. Leucine is an essential amino acid, meaning that the human body cannot synthesize it, and it, therefore, must be ingested. As a food additive, L-Leucine has E number E641 and is classified as a flavor enhancer.


Item Index
Specific rotatory power[α] D20 +14.9º 16º
Clarity >=98.0%
Chloride[CL] =<0.02%
Sulfate[SO4] =<0.02%
Residue on ignition =<0.10%
Iron salt[Fe] =<10 ppm
Heavy metal[Pb] =<10 ppm
Arsenic salt =<1 ppm
Ammonium salt[NH4] =<0.02%
Other amino acid =<0.20%
Loss on drying =<0.20%
Content 98.5 100.5%



1, What kinds of certificates can you offer?

Foodchem is an ISO2008 9001 certified company, as for L-Leucine, 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-Leucine distributor, at the same time, we are manufacturer of other products.

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

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

4, What is the price of L-Leucine?

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

5, How long shall we wait for your reply?

We can guarantee to reply your inquiries of L-Leucine 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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