Send Message
PREMIUM INGREDIENT CO.,LTD 86-0510-8699-5770


  • High Light



    threonine powder


    CAS 80-68-2

  • Product Name
  • Cas No.
  • Molecular Formula
  • Molecular Weight
  • Place of Origin
  • Brand Name
    Premium Ingredient
  • Certification
  • Minimum Order Quantity
  • Packaging Details
  • Delivery Time
    1-2 weeks
  • Payment Terms
    TT against copy of documents、L/C
  • Supply Ability




Products Description

DL-Threonine includs d-threonine and l-threonine. DL-Threonine is an essential α - amino acid classified as polar which has two chiral centers. In plants and micro-organisms, threonine is synthesized from aspartic acid via aspartyl - semialdehyde and homoserine.

DL-Threonine is as an additive to animal feed. They are also used to chelate metal cations in order to improve the absorption of minerals from supplements, which may be required to improve the health or production of animals. This chelating ability is also used in fertilizers for agriculture.


CAS NO.: 80-68-2

Molecular Formula: C4H9NO3

Molecular Weight: 119.12

Character: DL-Threonine appears as white crystalline or crystalline powder, being odorless with slightly sweet taste. The melting point is about 245 ° C (decomposition). It can be dissolved in water (20.1g/100mL, 25 ° C), being insoluble in organic solvents such as ethanol. It has stable chemical property.



1.Threonine is a feed nutrient enhancer, being the essential amino acids for the growth of livestock and poultry fish.
2. For biochemical research.
3. It can be used as nutritional supplements.
4. The first limiting amino acid for rice, wheat, bread, corn, etc. is glycine, which may be supplemented with a secondary restricted amino acid, threonine. It can still strengthen the peanut powder, oats and so on.
5. L-threonine ([72-19-5]) is essential amino acids with the physiological effect of DL-threonine being half of that of the L-threonine. Upon its lack, people is easily susceptible to loss of appetite and fatty liver embolism. Threonine can not be de novo synthesized inside the higher animals body and must be supplied externally. The cereal protein, in addition to should being provided of L-lysine, should also be supplied with L-threonine. This is due to that although there is a high content of L-threonine, but the combination of threonine and peptide in the protein is difficult to be hydrolyzed and is not easily digested and absorbed. As a nutritional supplement, in order to play the best use of fruit, it can be co-used with glycine in the rice, co-used with glycine and valine in wheat flour, and co-used with glycine and methionine in the barley, oats as well as co-used with glycine and tryptophan in corn. Co-heating with hot grapes can easily produce empyreumatique and chocolate flavor with aromatherapy role. It can also be used for separation to obtain L-threonine and further for the preparation of amino acid infusion and integrated amino acid preparations.



Amino Acids
Product name Cas No. Product name Cas No.
D-aspartic acid 1783-96-6 DL-Valine 516-06-3
taurine 107-35-7 DL-Leucine 328-39-2
l-lysine base 56-87-1 DL-Threonine 80-68-2
L-Methionine 63-68-3 DL-Methionine 59-51-8
L-Threonine 72-19-5 DL-Alanine 302-72-7
L-Pyroglutamic acid 98-79-3 Glycine 56-40-6
L-Cystine 56-89-3 L-Glutamine 56-85-9
L-Tyrosine 60-18-4 L-Phenylalanine 63-91-2
L-Leucine 61-90-5 L-Proline 147-85-3
L-Isoleucine 73-32-5 L-Histidine Hcl 5934-29-2
L-Valine 72-18-4 L-Histidine 71-00-1
L-Citrulline 372-75-8 L-Tryptophan 73-22-3
L-Arginine 74-79-3 N-Acetyl-L-Tyrosine 537-55-3
L-Arginine monohydrochloride 1119-34-2 N-Acetyl L-Cysteine 616-91-1
L-Glutamic Acid 56-86-0 Creatine Monohydrate 6020-87-7
L-Cysteine Hcl Mono 7048-04-6 Creatine Anhydrous 57-00-1
L-Cysteine Hcl Anhy 52-89-1 L-Aspartic Acid 56-84-8
L-Cysteine 52-90-4 L-Alanine 56-41-7
D-Leucine 328-38-1 L-Theanine 3081-61-6
L-Lysine monohydrochloride 657-27-2 BCAA(Branched Chain Amino Acids)


Basic Info

Product Name:


Other Name:

Threonine;DL-Threonine;Threonine,DL-;(±)-Threonine;NSC 206292;5090-44-8;31138-27-9;1187422-62-3

CAS No.:


Molecular Formula:




Molecular Weight:


Exact Mass:


EC Number:











White crystalline powder; slight savoury aroma



Melting Point:

228-229 °C (decomp)

Boiling Point:

345.8ºC at 760 mmHg

Flash Point:


Refractive Index:


Water Solubility:

H2O: 200 g/L (25 ºC)

Storage Conditions:

Store at RT.



Hazard Identification

Classification of the substance or mixture

Not classified.


GHS label elements, including precautionary statements

Pictogram(s) No symbol.
Signal word No signal word
Hazard statement(s) none
Precautionary statement(s)
Prevention none
Response none
Storage none
Disposal none



Other hazards which do not result in classification

no data available


Handling and Storage

Precautions for safe handling

Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.


Conditions for safe storage, including any incompatibilities

Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.




Packing & Delivery

DL-Threonine 0



Our Company

DL-Threonine 1

Premium Ingredient Co., Ltd has been producing and distributing amino acids, vitamins, nutrition and food additives for decades, severing for more than 100 clients in the fields of food, beverage, diet supplements, cosmetic, pharmaceutical and animal feeding, exporting to dozens of countries. We supply these products only from the first class Chinese factories with over 10 years producing experiences.


With more than 10 years working experience, Premium Ingredient Co., Ltd offers not only quality products, but also good service, quick response, delivery in time, share up-to-the minute market information, supply one-stop-shop solutions.


We have established a long-term, extensive and deep cooperation with the source to ensure sufficient supplies, stable prices, and rapid shipment. Our 3rd party documents include ISO9001, ISO14001, HACCP, HALAL, KOSHER, GMP, FAMI-QS.


We expect you sending email or coming for negotiation.



Our Factory

DL-Threonine 2DL-Threonine 3DL-Threonine 4



Our Research

DL-Threonine 5



Our Certifications

DL-Threonine 6





Q: How long is your delivery time?

A: Generally it is 1-2 weeks..


Q: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free charge but do not pay the cost of freight.


Q: What's your MOQ ?

A: For the high value product, our MOQ starts from 25kg.


Q: Is there a discount ?

A: Yes, for larger quantity, we always support with better price.


Q: How to confirm the Product Quality before placing orders ?

A: Our products conforms to the internation standard, such as USP, CP, FCC. We can also send you the samples for test. After you confirmed the samples, we will move to the next step for cooperation.


Q: How to start orders or make payments ?

A: You can send our your Purchase order ( if your company has ), or just send a simple confirmation by email or by Trade Manager, and we will send you Proforma Invoice with our bank details for your confirmation, then you can make payment accordingly.


Q: How do you treat quality complaint ?

A: We tested each batch before delivery and only qualified product will be delivery, in case you find any problem about the quality when you received and tested, send email to us, and enclose the photo of the products and 3rd party test reports, We negotiate to resolve these issues, recall or exchange goods, or compensate.


Q: why we choose you ?

A : We ensure ingredient purity, on-time delivery, process efficiency and the technical documents you require.

(1) quality: meet even exceed what you expect.

(2) prices: competitive

(3) service: one stop shop solution, respond soon, delivery fast, share the market information, share the new application of the product.