China Factory Direct
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| CAS number | 13748-90-8 |
| Product name | L-LEUCIC ACID |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Reagent GradeFood GradeCosmetic 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) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Used as a chiral building block or intermediate in the synthesis of active pharmaceutical ingredients | Chemical synthesis, biocatalysis |
| Nutritional Supplements | Used as a leucine metabolite in sports nutrition or health supplement formulations | Fermentation, chemical synthesis |
| Personal Care & Cosmetics | Used as a skin-conditioning or humectant ingredient | Formulation addition |
| Research & Development | Used as a biochemical reagent for research studies or as a reference standard | Chemical synthesis, purification |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC with UV detection | Quantification based on peak area comparison against a certified reference standard using reversed-phase chromatography and UV absorbance at 210 nm. |
| Optical Rotation | [alpha]D measurement | Determination of specific rotation using a polarimeter to confirm chiral integrity and enantiomeric purity. |
| Water Content | Karl Fischer titration | Volumetric or coulometric titration with iodine-based reagent to quantify water via stoichiometric reaction. |
| Residue on Ignition | Gravimetric analysis | Heating sample to 750 C in a platinum crucible and measuring non-volatile inorganic residue by weight difference. |
| Heavy Metals | ICP-OES | Multi-element quantification of Pb, Cd, Hg, As, and others after acid digestion, based on atomic emission intensities. |
| Chloride Impurity | Ion Chromatography (IC) | Separation and conductivity detection of chloride ions after aqueous extraction and filtration. |
| Sulfated Ash | Gravimetric analysis | Ignition of sample with sulfuric acid followed by weighing of residual inorganic sulfate salts. |
| Related Substances | HPLC with gradient elution | Detection and quantification of structurally similar impurities using optimized reversed-phase separation and UV detection. |
| pH (1% aqueous solution) | Potentiometric pH measurement | Measurement of hydrogen ion activity using calibrated glass electrode in a standardized aqueous solution. |
| Melting Point | Capillary melting point apparatus | Observation of solid-to-liquid transition temperature range under controlled heating rate per USP/EP guidelines. |
| Appearance | Visual inspection | Assessment of physical state, color, and clarity against established reference standards under controlled lighting. |
| Solubility | Qualitative dissolution test | Evaluation of complete dissolution in specified solvents (e.g., water, methanol, ethanol) at defined temperature and concentration. |
| Test Item | Specification |
|---|---|
| Appearance | White to off white solid |
| Purity | ≥98.0% |
| Water | ≤1.0% |
| Specific rotation | -24.0° ~ -28.0°(C=1 ,NaOH) |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
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.