China Factory Direct
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| CAS number | 65487-73-2 |
| Product name | (S)-2-((tert-butoxycarbonyl)amino)-5-ethoxy-5-oxopentanoic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial 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 |
|---|---|---|
| Pharmaceutical R&D | Intermediate in the synthesis of peptide-based drugs, used to construct peptide chains containing glutamic acid residues | Participates as a protected amino acid monomer in condensation reactions during solid-phase or solution-phase peptide synthesis |
| Biochemical Research | Preparation of glutamic acid derivative probes or labels for studying neurotransmitter-related mechanisms | Fluorescent or affinity tags are introduced via deprotection and functional group transformation reactions |
| Organic Synthesis | Chiral building block for constructing complex molecules with defined stereochemistry | Selective deprotection and subsequent functionalization are performed in multi-step syntheses, leveraging the stability of the Boc protecting group |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantifies main component using reverse-phase HPLC with UV detection at 210 nm, comparing peak area to calibrated standard. |
| Related Substances | HPLC-UV | Detects and quantifies impurities (e.g., deprotected acid, di-BOC, hydrolysis products) via gradient HPLC with UV detection. |
| Water Content | Karl Fischer Titration | Measures trace water by coulometric or volumetric titration using iodine generation in pyridine/methanol solvent system. |
| Residual Solvents | GC-FID | Quantifies residual ethyl acetate, methanol, or dichloromethane using gas chromatography with flame ionization detection. |
| Heavy Metals | ICP-MS | Determines total heavy metal content (Pb, Cd, Hg, As, Ni) after acid digestion by inductively coupled plasma mass spectrometry. |
| Chloride Content | Ion Chromatography | Separates and quantifies chloride ions using suppressed conductivity detection after aqueous extraction. |
| Optical Rotation | [alpha]D Measurement | Measures specific optical rotation at 589 nm using sodium D-line to confirm chiral integrity and enantiomeric purity. |
| Melting Point | Capillary Melting Point Apparatus | Determines temperature range of solid-to-liquid transition using calibrated capillary apparatus per USP <741>. |
| Appearance | Visual Inspection | Assesses physical state, color, and homogeneity against established reference standards under controlled lighting. |
| Residue on Ignition | Gravimetric Analysis | Measures inorganic ash content after high-temperature incineration (700-800 C) and weighing of residue. |
| pH of Solution | pH Meter | Measures pH of a standardized aqueous/ethanol solution (e.g., 10 mg/mL) using calibrated pH electrode. |
| Particle Size Distribution | Laser Diffraction | Determines size distribution of solid particles in suspension using Mie scattering theory and laser diffraction analysis. |
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.5% (HPLC) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Melting Point | 128-132°C |
| Optical Rotation | -4.0 to -4.5° (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.