China Factory Direct
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| CAS number | 55516-54-6 |
| Product name | L-1-Naphthylalanine |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty 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 |
|---|---|---|
| Pharmaceuticals | Non-natural amino acid building block for peptide drug synthesis, e.g., in the development of enzyme inhibitors or receptor antagonists | Used as an amino acid building block in solid-phase peptide synthesis (SPPS) or solution-phase peptide synthesis |
| Biochemical Research | Precursor for fluorescent probes or labels in protein labeling and bioimaging studies | Coupled with specific fluorophores following organic synthesis |
| Materials Science | Building block for functional polymers or smart materials, such as stimuli-responsive polymers | Incorporated into polymer chains via polymerization reactions |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantification using reverse-phase HPLC with UV detection at 220-280 nm, comparing peak area to a certified reference standard. |
| Chiral Purity | Chiral HPLC | Separation of enantiomers on a chiral stationary phase, with detection and integration of L- and D-enantiomer peaks. |
| Loss on Drying | Gravimetric (105 C drying) | Mass loss measured after drying sample at 105 C to constant weight, indicating volatile content including residual solvents and moisture. |
| Residual Solvents | GC-FID | Identification and quantification of common organic solvents (e.g., methanol, acetone, DMF) using gas chromatography with flame ionization detection. |
| Heavy Metals | ICP-MS | Multi-element quantification of toxic metals (e.g., Pb, Cd, Hg, As) after acid digestion, based on atomic mass spectrometry detection. |
| Water Content | Karl Fischer Titration | Volumetric or coulometric titration with iodine-based reagent to determine total water content via stoichiometric reaction. |
| Specific Optical Rotation | Polarimetry | Measurement of rotation angle of plane-polarized light induced by chiral molecules in solution, confirming stereochemical identity and enantiomeric excess. |
| Related Substances | HPLC-UV | Detection and quantification of structurally related impurities (e.g., naphthaldehyde, glycine derivatives) using gradient HPLC with UV detection. |
| pH (1% aqueous solution) | pH Meter | Electrochemical measurement of hydrogen ion activity in a standardized aqueous suspension/solution. |
| Melting Point | Capillary Melting Point Apparatus | Thermal determination of solid-to-liquid transition temperature range using calibrated capillary apparatus per USP/EP guidelines. |
| Residue on Ignition | Gravimetric (500-600 C) | Mass of non-volatile inorganic residue remaining after high-temperature ashing, indicating inorganic impurities or catalyst residues. |
| Appearance | Visual Inspection | Subjective assessment of physical form (e.g., white to off-white crystalline powder) and absence of foreign particles or discoloration under controlled lighting. |
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% (LC-MS) |
| Melting Point | 178–182°C |
| Optical Rotation | -15.0° to -19.0° (c=1, in 1M HCl) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
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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.