L(+)-allo-Threonine Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 28954-12-3 |
| Product name | L(+)-allo-Threonine |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeReagent Grade |
| Packaging | 25KG/bag500KG/bag1000KG/bag |
| Sample | Test Samples Available (Click to Request Samples) |
| COA | View COA |
| Price | Get Quote |
| Supply Type | Bulk / Contract manufacturing / OEM |
| Shipping | FCL / LCL available |
| Payment Terms | Support FOB \ CIF \ EXW quotations, and accept Letter of Credit (L/C). |
| Manufacturer | Greenrock Chemical(China Factory) |
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Documents We Provide for L(+)-allo-Threonine
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk L(+)-allo-Threonine Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of L(+)-allo-Threonine
| Industry | Application | Process |
|---|---|---|
| Biotechnology | Synthesis of amino acid-based pharmaceuticals | Produced via fermentation |
| Pharmaceutical Manufacturing | Preparation of amino acid injection solutions | Purification and separation |
| Research Institutions | Research-grade reagent | Used directly or prepared as solution |
Manufacturing Quality Control of L(+)-allo-Threonine
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (L-Threonine Content) | Acid-Base Titration with HClO4 in non-aqueous medium | Quantifies primary amino group via potentiometric titration using perchloric acid in glacial acetic acid. |
| Optical Rotation | [a]D at 20 C | Measures specific rotation using sodium D-line light to confirm chiral purity and identity. |
| Specific Optical Rotation | Polarimetry | Determines observed rotation of plane-polarized light through a solution to verify enantiomeric excess. |
| Loss on Drying | Gravimetric (105 C, 2 h) | Measures mass loss after drying to determine volatile content including moisture and residual solvents. |
| Residue on Ignition | Gravimetric (Ashing at 600 C) | Quantifies inorganic impurities remaining after high-temperature combustion. |
| Heavy Metals (as Pb) | Colorimetric (Thiourea method) | Forms colored complex with heavy metal ions under acidic conditions; compared visually or spectrophotometrically. |
| Sulfated Ash | Gravimetric (H2SO4 treatment + ashing at 600 C) | Converts inorganics to sulfates before ashing to improve reproducibility of residue measurement. |
| Chloride | Argentometric Titration (Mohr method) | Titration with AgNO3 using K2CrO4 indicator; forms red Ag2CrO4 endpoint after all Cl- is precipitated. |
| Sulfate | Barium Sulfate Gravimetric Method | Precipitates SO4(2-) as BaSO4 in acidic medium; dried and weighed to quantify sulfate content. |
| Related Substances | HPLC with UV detection | Separates and quantifies structurally similar impurities (e.g., L-serine, L-allo-threonine) using reversed-phase chromatography. |
| Water Content | Karl Fischer Titration | Electrochemical titration using iodine, sulfur dioxide, and pyridine/methanol to quantify water stoichiometrically. |
| Microbial Limits | Membrane Filtration + Plate Count | Detects and enumerates viable aerobic microorganisms by filtration, membrane transfer, and colony enumeration on agar media. |
Technical Specifications of L(+)-allo-Threonine
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 245-248 °C (decomposes) |
| Optical Rotation | +9.0 to +11.0 (c=1, H2O) |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
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Download COA of L(+)-allo-Threonine
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of L(+)-allo-Threonine
Packaging of L(+)-allo-Threonine
Industrial L(+)-allo-Threonine Procurement FAQ
1. How do you ensure product quality consistency?
We rely on a mature China-based manufacturing system and implement strict batch control and quality inspection for every shipment. Our production process complies with ISO 9001 standards, and a COA is provided for each batch to ensure consistent and reliable quality.
2. Do you offer competitive pricing for bulk orders?
Yes, as a China-based manufacturer and bulk supplier, we provide tiered pricing based on order volume. We support FOB and CIF quotations, as well as L/C payment terms for large transactions to meet international trade requirements.
3. Can you support large-volume or long-term supply?
We have stable production capacity and a well-established supply chain, enabling continuous bulk supply. We support ton-level and container-level orders, as well as long-term cooperation projects.
4. What is your typical lead time?
For in-stock products, shipment can be arranged within 1–3 days. For bulk packaging or customized orders, lead time depends on the specific quantity and production schedule.
5. What documents do you provide?
We can provide complete documentation upon request, including COA, SDS, TDS, and other compliance certificates, meeting industrial procurement and export requirements.
6. Can you customize product specifications or packaging?
Yes, we support customization of parameters such as purity, impurities, residual solvents, and heavy metals. We also offer various bulk packaging options, including 25kg bags, drums, and IBC tanks, suitable for industrial applications and transportation.
7. What shipping options do you support?
We support both FCL (Full Container Load) and LCL (Less than Container Load) shipments, and can flexibly arrange logistics solutions based on order size to meet bulk chemical export needs.
8. Do you provide technical or application support?
Yes, we provide basic application guidance and technical support based on industry experience to help customers optimize product usage.
9. How do you handle compliance and export regulations?
We are familiar with international trade and export regulations, ensuring all products comply with relevant requirements. We also provide complete documentation to support smooth customs clearance and global delivery.
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