L-Leucine is a branched-chain essential amino acid, chemically (2S)-2-amino-4-methylpentanoic acid (CAS 61-90-5), with molecular formula C6H13NO2 and a molecular weight of 131.17. It is produced by microbial fermentation and supplied as a free-form crystalline powder standardized to a typical assay of >=98.5% against USP, EP and FCC. It is a constitutional isomer of L-isoleucine, sharing the same molecular formula and molecular weight but differing in the position of the methyl branch and carrying a single stereocenter rather than isoleucine's two. It is one methylene unit larger than L-valine (C5H11NO2, 117.15), the smallest member of the family, and unlike the fixed-ratio 2:1:1, 4:1:1 and 8:1:1 blends it is a single defined amino acid with its own CAS number and formula. We manufacture it in powder, capsule and tablet formats.
- 粉剂
- 胶囊
- 片剂
Applications
Single amino acid supplements, sports-nutrition drink powders, capsules and tablets, and multi-ingredient amino-acid blends.
Documentation & quality
Every order is backed by the documents your quality team files, and the controls behind them.
Certificate of Analysis
every batchSpecification sheet
on requestAllergen statement
on requestGMO statement
on requestTraceability
on requestSafety Data Sheet
where applicableHow it’s controlled
- Identity verified on every incoming raw material
- Screened for heavy metals and microbial contaminants
- Full batch and lot traceability
- Produced under our certified GMP system
Other forms of Branched-Chain Amino Acids (BCAA)
L-Isoleucine
(2S,3S)-2-amino-3-methylpentanoic acid
- CAS
- 73-32-5
- Formula
- C6H13NO2
- 纯素
- 无麸质
L-Valine
(2S)-2-amino-3-methylbutanoic acid
- CAS
- 72-18-4
- Formula
- C5H11NO2
- 纯素
- 无麸质
BCAA 2:1:1
Blend of L-leucine, L-isoleucine and L-valine
- 纯素
- 无麸质
BCAA 4:1:1
Blend of L-leucine, L-isoleucine and L-valine
- 纯素
- 无麸质
BCAA 8:1:1
Blend of L-leucine, L-isoleucine and L-valine
- 纯素
- 无麸质
Instantized BCAA 2:1:1 (soy lecithin)
Blend of L-leucine, L-isoleucine and L-valine with soy lecithin dispersant
- 纯素
- 无麸质