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DL-Threonine is a synthetic racemic mixture of two stereoisomers (D- and L-threonine), an essential α-amino acid vital for protein synthesis and metabolic functions. While L-threonine is the biologically active form used by humans and animals, the D-isomer lacks metabolic utility. Primarily produced for cost-effective animal feed additives, DL-threonine supports livestock growth and nutrition. In humans, supplements typically contain pure L-threonine for roles in collagen production, immune function, and gut health. The DL-form is rarely used in human products due to the inert nature of the D-isomer. Proper isomer selection is crucial for efficacy in dietary or medical applications.
| Product Name | DL-Threonine |
| CAS NO. | 80-68-2 |
| Apperance | White powder |
| Assay | 99.30% |
| Pacakge | 1kg/Foil Bag, 25kg/ Box/carton |
| MOQ | 1kg |
| Storage | Cool and dry place |
| Shelf Life | 2 Years |
| Brand | Fortunachem |
| Items | Specifications | Results |
| Appearance | White or off-white crystalline powder | White powder |
| Assay | 98.0~101.0% | 99.30% |
| State of solution | Not less than 98.0% | 98.2% |
| Chloride | Not more than 0.02% | Conforms |
| Heavy metals | Not more than 10ppm | Conforms |
| Arsenic | Not more than 2ppm | Conforms |
| Other amino acids | Chromatographically not detectable | Conforms |
| Loss on drying | Not more than 0.20% | 0.10% |
| Residue on ignition | Not more than 0.10% | 0.08% |
| The product conforms to the Enterprise Standard. | ||
Application of DL-Threonine refers to a racemic mixture containing equal parts of the D- and L-enantiomers of the amino acid threonine. Here's a structured breakdown:
1. Threonine Basics:
Essential Amino Acid: Threonine is one of the nine essential amino acids, meaning it must be obtained through diet as the human body cannot synthesize it.
Role: It is crucial for protein synthesis, immune function, and the production of other molecules like glycine and serine.
2. Stereoisomerism:
L-Threonine: The biologically active form used in human physiology. Proteins are composed exclusively of L-amino acids.
D-Threonine: The mirror-image enantiomer, which is not utilized in human protein synthesis and has limited biological relevance in humans.
3. DL-Threonine:
Racemic Mixture: A 50:50 blend of D- and L-Threonine, typically resulting from synthetic production methods that do not separate enantiomers.
Production: Cheaper to produce than pure L-Threonine, as enantiomeric separation (resolution) can be complex and costly.
4. Applications and Considerations:
Supplements/Nutrition: Only L-Threonine is bioactive in humans. DL mixtures may appear in lower-cost supplements, but their efficacy is halved, as the D-form is not metabolically useful.
Industrial Uses: DL-Threonine might be employed in contexts where stereochemistry is irrelevant, such as in certain chemical processes or animal feed additives (though even here, L-forms are generally preferred).
Research: D-Threonine may be used in biochemical studies or to explore specific microbial pathways, as some bacteria can utilize D-amino acids.
5. Key Takeaway:
For human nutrition or supplements, L-Threonine is the optimal form. DL-Threonine’s inclusion may indicate cost-cutting, but it is less effective due to the inactive D-enantiomer. Always check labels to ensure bioavailability.
In summary, DL-Threonine is a racemic mix with limited utility in human health, emphasizing the importance of selecting L-Threonine for dietary or therapeutic purposes.
| Q | Can I get a sample for free? |
| A | For small-quantity and low-value products, we can provide samples for free (excluding shipping costs). For high-value samples, we will charge the basic sample cost, but the full amount can be refunded if an order is placed after sample testing. |
| Q | How to confirm the product quality before placing orders? |
| A | Most of our products comply with international standards such as USP, EP, BP, JP, or CP. We will provide COA, TDS, and MSDS for customers to review and confirm the specifications before placing an order. |
| Q | What payment methods do you accept? |
| A | For small or low-value orders, we accept Credit Card, MasterCard, VISA, Western Union, and T/T. For large orders, we accept T/T and L/C. Please note that pay-on-delivery or pay-after-delivery options are not available. |
| Q | What is your shipment method? |
| A | For orders with a gross weight of less than 100kg, we usually ship by courier services like FedEx or UPS. Customers may also arrange pickup using their courier accounts—we will pack the goods properly and wait for pickup. For orders over 100kg, we ship by air or sea according to the customer's requirements. |
| Q | How long is your after-sales service? |
| A | We accept quality complaints within three months after the customer receives the goods. We also provide lifetime technical support for all products purchased from our company. |
| Q | How do you handle quality complaints? |
| A | We support customers in submitting our products to any legitimate third-party testing organization for verification based on our COA specifications. If the test results do not conform to the COA, we will take full responsibility and cover all customer losses. |
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