Manufacturers List

L-Leucine

L-Leucine is a food-grade essential branched-chain amino acid (BCAA) recognized as the primary activator of muscle protein synthesis in nutrition applications. We supply bulk L-Leucine sourced from leading China manufacturers, available in powder form for global food and beverage producers. Our L-Leucine is widely used in amino acid supplement formulations, recovery products, sarcopenia and muscle wasting, medical food products and pharmaceutical parenteral nutrition solutions.

Kosher Halal ISO 9001 BRC
E Number
E641
CAS No.
61-90-5
HS Code
292249

Introduction

L-Leucine is an essential branched-chain amino acid and the most potent activator of the mTOR signaling pathway, which triggers muscle protein synthesis. Among the three BCAAs, L-Leucine is considered the most important for muscle building and is often supplemented at higher ratios in BCAA formulations.

It is naturally abundant in animal proteins, dairy products, and legumes. L-Leucine is commercially produced through microbial fermentation to achieve high purity and the correct L-configuration. Its critical role in muscle metabolism has made it one of the most demanded single amino acids in the global sports nutrition and clinical nutrition markets.

Uses

  • BCAA and amino acid supplement formulations
  • Muscle protein synthesis and recovery products
  • Clinical nutrition for sarcopenia and muscle wasting
  • Infant formula and medical food products
  • Pharmaceutical parenteral nutrition solutions
  • Functional food and protein-enriched product development

Specifications

Item Specification
Appearance White crystalline powder
Assay ≥98.5%
Specific Rotation [α]D20 +14.5° to +17.0°
Loss on Drying ≤0.5%
Residue on Ignition ≤0.1%
pH (1% solution) 5.5–7.0
Heavy Metals (as Pb) ≤10 ppm
Arsenic ≤1 ppm
Chloride ≤0.02%
Total Plate Count ≤1000 CFU/g
![](http://www.aminoacid-chem.com/images/ny_02.gif) ![](http://www.aminoacid-chem.com/images/ny_03.gif)
**No.** **Products**
01 [L-Alanine](http://www.aminoacid-chem.com/prode2.htm)
02 [L-Arginine](http://www.aminoacid-chem.com/prode3.htm)
03 [L-Arginine Hydrochloride(HCL)](http://www.aminoacid-chem.com/prode4.htm)
04 L-Arginine L-Aspartate
05 L-Aspartic Acid
06 L-Asparagine
07 BCAA Normal
08 BCAA Instant
09 BCAA Granular
10 L-Citrulline
11 L-Citrulline DL-Malate
12 L-Cysteine Base
13 [L-Cysteine Hydrochloride(HCL) Anhydrous](http://www.aminoacid-chem.com/prode5.htm)
14 [L-Cysteine Hydrochloride(HCL) Monohydrate](http://www.aminoacid-chem.com/prode6.htm)
15 [L-Cystine](http://www.aminoacid-chem.com/prode7.htm)
16 [Glycine(Have REACH Registration)](http://www.aminoacid-chem.com/prode8.htm)
17 [L-Glutamic Acid](http://www.aminoacid-chem.com/prode9.htm)
18 L-Glutamine
19 [L-Histidine](http://www.aminoacid-chem.com/prode10.htm)
20 L-Histidine Hydrochloride(HCL) H2O
21 L-Hydroxyproline
22 [L-Isoleucine](http://www.aminoacid-chem.com/prode11.htm)
23 L-Isoleucine Instant
24 L-Isoleucine Granular
25 [L-Leucine](http://www.aminoacid-chem.com/prode12.htm)
26 L-Leucine Instant
27 L-Leucine Granular
28 L-Lysine
29 L-Lysine Acetate
30 L-Lysine L-Aspartate
31 [L-Lysine Hydrochloride(HCL)](http://www.aminoacid-chem.com/prode13.htm)
32 [L-Methionine](http://www.aminoacid-chem.com/prode14.htm)
33 L-Ornithine L-Aspartate
34 L-Ornithine Hydrochloride(HCL)
35 [L-Phenylalanine](http://www.aminoacid-chem.com/prode15.htm)
36 [L-Proline](http://www.aminoacid-chem.com/prode16.htm)
37 [L-Serine(Have REACH Registration)](http://www.aminoacid-chem.com/prode17.htm)
38 [L-Threonine](http://www.aminoacid-chem.com/prode18.htm)
39 [L-Tryptophan](http://www.aminoacid-chem.com/prode19.htm)
40 [L-Tryptophan Granular](http://www.aminoacid-chem.com/prode19.htm)
41 [L-Tyrosine](http://www.aminoacid-chem.com/prode20.htm)
42 L-Tyrosine Instant
43 [L-Valine](http://www.aminoacid-chem.com/prode21.htm)
44 L-Valine Instant
45 [L-Valine Granular](http://www.aminoacid-chem.com/prode24.htm)
46 [Taurine](http://www.aminoacid-chem.com/prode24.htm)
47 ß-Alanine
48 Amino Acid Coumpounds/Blends/Mix
49 Amino Acids Monomers & Compounds for FSMP
50 Amino Acids Monomers & Compounds for Infants
51 Amino Acids Monomers & Compounds for Nutrition Fortification of
Sports Food, Beverage
52 Amino Acids for Cell Culture Fermentation
53 Granular Amino Acids
54 Instant Amino Acids
55 [DL-Alanine](http://www.aminoacid-chem.com/prode22.htm)
56 [DL-Methionine](http://www.aminoacid-chem.com/prode23.htm)
57 D-Amino Acids
58 Calcium DL-Hydroxymethionine
59 Calcium DL-Ketoisoleucine
60 Calcium Ketoleucine
61 Calcium Ketophenylalanine
62 Calcium Ketovaline
63 Magnesium L-Aspartate Dihydrate
64 N-Acetyl-L-Amino Acid
65 S-Carboxymethyl-L-Cysteine
66 Compound Amino Acid/Formulated Amino Acid
67 Polypeptide Nutrient Protein Powder
— Nutrition Supplement For Prostatosis
68 Polypeptide Nutrient Protein Powder
–Nutrition Supplement For Middle And Old Age
69 Polypeptide Nutrient Protein Powder
–Nutrition Supplement For Vegetarian
70 Dietary Fiber Nutrition Powder — Water Soluble
71 OEM Blends/Formula Amino Acid, Vitamins, ECT Nutritions
72 [Acesulfame-K](http://www.aminoacid-chem.com/prode28.htm)
73 [Aspartame](http://www.aminoacid-chem.com/prode29.htm)
74 [Sucralose](http://www.aminoacid-chem.com/prode30.htm)
75 Sweeteners, No Calories (1-100 Times Sugar Sweetness)
76 Betaine
77 [L-Carnitine Base](http://www.aminoacid-chem.com/prode27.htm)
78 [L-Carnitine Fumarate](http://www.aminoacid-chem.com/prode25.htm)
79 [L-Carnitine Tartrate](http://www.aminoacid-chem.com/prode26.htm)
80 [Creatine Monohydrate](http://www.aminoacid-chem.com/prode31.htm)
81 Inositol
82 Polylysine
83 Vitamins (VB1, VB2, VB3, VB5, VB6, VB7, Folic Acid, VB12, VC)
Tel :    +86-311-85296281
E-mail :    [gchem@126.com](mailto:gchem@126.com)

Product / Packaging

L-Leucine packaging

Other Conditions

MOQ

Our MOQ for bulk food/feed ingredient is generally 500 kg. We also support mixed containers — combine L-Leucine with other food ingredients in one shipment to save on freight.

Samples

We provide free samples (100–500g) for quality testing before you place a bulk order. The buyer covers shipping costs only. Samples are typically dispatched within 2–3 business days.

Lead Time

Standard lead time is 7–15 days after order confirmation and payment. For stock items, delivery can be faster. We will confirm the exact timeline before you place the order.

Documents

You will receive the original COA (Certificate of Analysis), COO (Certificate of Origin), MSDS, TDS, and relevant certifications directly from the manufacturer. We guarantee full document authenticity and traceability.

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