Product Overview

L-Threonine is an essential amino acid that plays a vital role in protein synthesis and various metabolic processes in living organisms. It is a white crystalline powder or rhombic crystals with a slightly sweet taste and is odorless. As an essential amino acid, L-threonine cannot be synthesized by the human or animal body and must be obtained from dietary sources.

Basic Information：

Chemical Name： L-Threonine； (2S,3R)-2-Amino-3-hydroxybutyric acid

CAS No.： 72-19-5

Molecular Formula： C₄H₉NO₃

Molecular Weight： 119.12 g/mol

IUPAC Name： (2S,3R)-2-amino-3-hydroxybutanoic acid

Key Features

Essential Amino Acid – Must be obtained through diet or supplements as the body cannot produce it naturally.

Essential for Human & Animal Health – Plays a critical role in protein balance, collagen and elastin formation, immune function, and liver health.

Supports Immune System – Aids in the production of antibodies and promotes thymus growth and activity.

Promotes Collagen & Elastin Formation – Supports healthy connective tissue, skin elasticity, and wound healing.

Aids Fat Metabolism – Functions as a lipotropic agent, helping to control fat buildup in the liver when combined with aspartic acid and methionine.

Improves Nutrient Absorption – Helps the digestive and intestinal tracts function more smoothly.

Essential for Normal Growth – Particularly important for growth and development in children and young animals.

High Solubility – Soluble in water, with a solubility of approx. 97g/L at 25°C.

Manufactured via Microbial Fermentation – Produced using environmentally friendly fermentation processes that ensure high purity and product consistency.

Multi-grade Available – Available in Feed Grade， Food Grade, Pharmaceutical Grade, and USP/EP/JP/FCC compliant grades to suit various applications.

Applications & Uses

Feed Industry

L-Threonine is widely used as a feed additive to balance amino acid profiles in animal feed, particularly in combination with L-Lysine. Key benefits include：

Promoting growth and improving feed conversion efficiency

Enhancing meat quality and increasing lean meat percentage

Reducing nitrogen excretion in livestock manure and urine, thereby lowering ammonia levels in animal housing

Saving protein resources and reducing feed costs by enabling low-protein diets

Strengthening the immune system of young livestock and poultry

Commonly added to feed for piglets, pigs, chickens, shrimp, and eels, typically used together with lysine.

Food Industry

As a food-grade ingredient meeting Food Chemical Codex（FCC）requirements, L-Threonine is suitable for food, beverage, and nutritional supplement applications. It is co-heated with glucose to generate burnt and chocolate aromas for flavor enhancement, and is employed in the formulation of amino acid infusions and comprehensive amino acid preparations.

Pharmaceuticals & Nutraceuticals

L-Threonine is available in pharmaceutical grade（meeting USP, EP, JP standards）and is used in：

Medical nutrition and enteral nutrition formulations

Active pharmaceutical ingredients（API）and excipients

Dietary supplements for immune support, liver health, and connective tissue maintenance

Sports nutrition as an essential amino acid for protein synthesis and muscle recovery

Promoting organismic growth, alleviating physical fatigue, and strengthening immune function by enhancing differentiation and proliferation of bone marrow T lymphocytes

Recommended Dosage（for human supplements）

General daily requirement is approximately 0.5–1 gram from dietary sources. As a dietary supplement， typical recommendation is 500 mg to 1,500 mg per day， or as directed by a healthcare practitioner.

Note: The above health-related information is for reference only. L-Threonine supplements are intended as dietary supplements and not for medical use. Please consult a healthcare professional before use.

Packaging & Storage

Parameter Information

Packaging 25 kg/bag or 25 kg/fiber drum with inner polyethylene bag； customized packaging available upon request

Storage Conditions Store in a cool， dry, well-ventilated and pollution-free indoor place, protected from rain and direct sunlight

Shelf Life 24 months（feed grade）； 6 years for specific pharma applications under optimal conditions

Pallet Placement Keep at least 10 cm distance between products and floor/wall

Sources：

Certifications & Compliance

Meets USP（United States Pharmacopeia）， EP（European Pharmacopoeia）， JP（Japanese Pharmacopoeia） standards

FCC（Food Chemical Codex） grade available for food, beverage and supplement applications

Halal and Kosher certified options available

Manufactured and packaged under current Good Manufacturing Practices（cGMP） in FDA registered facilities

Synonyms & Identifiers

L-α-Amino-β-hydroxybutyric acid

(2S,3R)-2-Amino-3-hydroxybutyric acid

H-Thr-OH

Thr

Methylthreonine

L-Isohaematine

L-Methionine is typically packaged in 25 kg fiber drums or multi-layer paper bags lined with polyethylene to protect it from moisture and external contaminants. Customized packaging solutions are available upon request to meet specific customer requirements and preferences.

By adhering to strict quality control standards, our L-Methionine guarantees high purity and effectiveness, making it a reliable ingredient for various applications across multiple industries.

To maintain its quality and potency, L-Methionine should be stored in a cool, dry place, away from direct sunlight and moisture. It is essential to keep the product in its original, tightly sealed container to prevent contamination and degradation. Proper storage conditions will ensure the stability and effectiveness of L-Methionine.