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CAS Number: 72-19-5
Molecular formula: C4H9NO3
Molecular weight: 119.12
EINECS number: 200-774-1

What is L-threonine?

L-threonine is an optically active form of threonine having L-configuration. It has a role as a nutraceutical, a micronutrient, a Saccharomyces cerevisiae metabolite, a plant metabolite, an Escherichia coli metabolite, a human metabolite, an algal metabolite and a mouse metabolite. It is an aspartate family amino acid, a proteinogenic amino acid, a threonine and a L-alpha-amino acid. It is a conjugate base of a L-threoninium. It is a conjugate acid of a L-threoninate. It is an enantiomer of a D-threonine. It is a tautomer of a L-threonine zwitterion.

Basic Information:

English name: L-Threonine


CAS Number: 72-19-5

Molecular formula: C4H9NO3

Molecular weight: 119.12

EINECS number: 200-774-1



Threonine is an amino acid that cannot be synthesized by the animal itself, but it is very needed. It can be used to accurately balance the amino acid composition of the feed, meet the needs of animal growth and maintenance, increase weight gain and lean meat rate, and reduce the ratio of feed to meat; it can improve the digestibility of amino acids The low nutritional value of feed ingredients can improve the production performance of low-energy feed; it can reduce the crude protein level of feed, improve the utilization of feed nitrogen, and reduce feed costs; it can be used for the feeding and breeding of pigs, chickens, ducks and high-grade aquatic products.

L-threonine is a feed additive produced by using bioengineering principles and using corn starch and other raw materials through liquid deep fermentation and refining. It can adjust the balance of amino acids in feed, promote growth, improve meat quality, improve the nutritional value of feed materials with low amino acid digestibility, and produce low-protein feeds, which can help save protein resources, reduce feed material costs, and reduce livestock and poultry manure and urine The nitrogen content in the, the concentration and release rate of ammonia in the livestock and poultry houses. It is widely used to add piglet feed, breeding pig feed, broiler feed, prawn feed and eel feed.


The L-threonine Supplier

Green Agri enjoys long term relationships with our clients because we focus on customer service and providing great products. If you are interested in our products, we are flexible with the customization of orders to suit your specific need and our quick lead time on orders guarantees you’ll have great tasting our products on-time.

We also focus on value-added services. We are available for service questions and information to support your business.

Where to buy L-threonine?

Just send email to , or submit your requirement in bottom form, we are of service at any time!


Why choose us?

  • Our intermediates are rigorously tested to ensure that they comply with international quality standards.
  • We will strive to enhance corporate value, assume social responsibility, and build a first-class professional company in China.
  • Our product range includes a wide range of intermediates, all of which are of the highest quality.
  • Our company will uphold the ‘all customer-centered’ business philosophy, sincere cooperation with customers, to achieve a win-win situation.
  • We understand the importance of timely delivery, and we work hard to meet all our customers’ delivery deadlines.
  • We realize that improving the quality of our L-threonine is an effective way to strengthen enterprise management and increase economic benefits.
  • We have a well-established supply chain that allows us to source high-quality materials at the best prices.
  • In the course of the company’s development, enterprises always adhere to innovation and meet the needs of the market.
  • Our factory is equipped with modern equipment and machinery, which allows us to produce intermediates of the highest quality.
  • We strive to strengthen the management of plan operations and maintain the stable operation of the enterprise.

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