China Factory Direct
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| CAS number | 92828-64-3 |
| Product name | BOC-D-ASP(OBZL)-OH |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty 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 |
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| Pharmaceuticals | Used as a synthetic intermediate for various pharmaceuticals, particularly in the preparation of biologically active compounds such as antiviral and anticancer agents | Applied in peptide bond formation to couple N-tert-butoxycarbonyl-D-aspartic acid 1-benzyl ester with other amino acids or small molecules, thereby constructing the target molecular structure |
| Biotechnology | Employed in protein and peptide research and development as a building block for assembling peptide chains with specific sequences | Applied in solid-phase or solution-phase synthesis under protecting group strategies to sequentially extend peptide chains and ultimately obtain peptides with the desired sequence |
| Materials Science | Potentially involved in the design and synthesis of certain functional polymeric materials, such as stimuli-responsive materials | Chemically incorporated into polymer backbones to impart specific physicochemical properties—e.g., thermal sensitivity or pH responsiveness |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantification by peak area comparison against a certified reference standard using reversed-phase chromatography and UV detection at 210 nm. |
| Related Substances | HPLC-UV | Separation and detection of structurally related impurities (e.g., deprotected forms, isomers, residual solvents) using gradient HPLC with UV monitoring. |
| Residual Solvents | GC-FID | Identification and quantification of volatile organic solvents (e.g., DMF, toluene, methanol) by gas chromatography with flame ionization detection. |
| Water Content | Karl Fischer Titration | Electrochemical titration using iodine, sulfur dioxide, and a base in methanol to determine trace water based on stoichiometric reaction. |
| Heavy Metals | ICP-OES | Multi-element quantification of toxic metals (e.g., Pb, Cd, Ni, Cu) after acid digestion, using inductively coupled plasma optical emission spectrometry. |
| Chloride Impurity | Ion Chromatography | Separation and conductivity detection of chloride ions in aqueous extract following sample dissolution and filtration. |
| Optical Rotation | [alpha]D Measurement | Determination of specific optical rotation using a polarimeter at 20 C and sodium D-line (589 nm) to confirm chiral integrity. |
| Residual Palladium | ICP-MS | Ultra-trace quantification of palladium (from coupling catalysts) after microwave-assisted digestion, using inductively coupled plasma mass spectrometry. |
| Appearance | Visual Inspection | Assessment of physical state, color, and presence of visible particles or foreign matter under controlled white light against established reference standards. |
| Melting Point | Capillary Melting Point Apparatus | Determination of temperature range at which solid transitions to liquid, indicating purity and identity via thermal behavior. |
| Loss on Drying | Gravimetric Analysis | Measurement of weight loss after drying under specified vacuum and temperature conditions to assess volatile content including moisture and solvents. |
| pH of Solution | pH Meter | Measurement of hydrogen ion activity in a standardized aqueous suspension (e.g., 1% w/v) using calibrated pH electrode. |
| Test Item | Specification |
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| Appearance | White crystalline solid |
| Purity | >=98.0% (LC-MS) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Melting Point | 128–132°C |
| Optical Rotation | +22.0 to +24.0° (c=1, in DMF) |
| Identification (NMR) | Conforms to reference spectrum |
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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.