China Factory Direct
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| CAS number | 688-14-2 |
| Product name | GLYCYL-DL-LEUCINE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeReagent GradeFood Grade |
| Packaging | 25KG/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 |
|---|---|---|
| Pharmaceutical R&D | Raw material for synthesizing peptides and pharmaceutical intermediates | Used in solid-phase or liquid-phase peptide synthesis |
| Biochemical Research | Reference standard or control substance for enzymology studies and protein structural analysis | Applied in chromatographic analysis and mass spectrometric identification |
| Food & Nutritional Supplements (Research Stage) | Potential amino acid supplement ingredient (subject to further regulatory approval) | Post-synthesis purification and crystallization |
| Chemical Reagents | Chiral building block in organic synthesis | Applied in condensation reactions and protection-deprotection strategies |
| 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. |
| Optical Rotation | [alpha]D measurement | Determination of specific rotation using a polarimeter to assess enantiomeric composition and identity. |
| Loss on Drying | Gravimetric method (105 C, 2 h) | Weight loss measured after drying under standardized temperature and time to determine volatile content including moisture. |
| Residue on Ignition | Gravimetric ash test | Residue mass after high-temperature incineration indicates inorganic impurities and sulfate ash content. |
| Heavy Metals | AAS or ICP-OES | Quantitative determination of toxic metals (e.g., Pb, Cd, Hg) by atomic absorption or optical emission spectroscopy. |
| Chloride Impurity | Argentometric titration (Mohr method) | Titration with silver nitrate using potassium chromate indicator to quantify chloride ion concentration. |
| Sulfate Impurity | Barium chloride turbidimetry | Precipitation of sulfate as barium sulfate; quantification via turbidity measurement at fixed wavelength. |
| Related Substances | HPLC with gradient elution | Separation and detection of structurally similar impurities (e.g., glycine, leucine, diketopiperazine) using UV detection. |
| pH of 1% Aqueous Solution | Potentiometric pH measurement | Determination of acidity/basicity using calibrated pH electrode in standardized aqueous solution. |
| Specific Absorbance (UV) | UV-Vis spectrophotometry | Measurement of absorbance at specified wavelength (e.g., 275 nm) to detect UV-absorbing organic impurities. |
| Microbial Contamination | Membrane filtration and plate count | Viable microorganism enumeration via filtration, culture on appropriate media, and colony counting. |
| Particle Size Distribution | Laser diffraction analysis | Determination of particle size distribution by measuring angular variation in laser light scattering intensity. |
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% |
| Water Content (KF) | <=0.5% |
| Melting Point | 274-278°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
| Optical Rotation | +/- 0.5° (c=1, H2O) |
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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.