Z-D-ASP(OBZL)-OH Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 5241-62-3 |
| Product name | Z-D-ASP(OBZL)-OH |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial 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) |
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Documents We Provide for Z-D-ASP(OBZL)-OH
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Z-D-ASP(OBZL)-OH Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Z-D-ASP(OBZL)-OH
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | As a protecting group in peptide synthesis to protect the α-carboxyl group of aspartic acid | Introduced onto the α-carboxyl group of aspartic acid via esterification in solid-phase or solution-phase peptide synthesis, forming the CBZ-D-aspartic acid-α-benzyl ester intermediate; subsequent deprotection by hydrogenolysis or acidic cleavage |
| Chemical Synthesis | For synthesizing complex molecules or drug precursors containing aspartic acid residues | Used as a chiral building block in organic synthesis; selective deprotection and coupling reactions enable construction of peptide chains or non-natural amino acid derivatives |
Manufacturing Quality Control of Z-D-ASP(OBZL)-OH
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantification via reverse-phase HPLC with UV detection at 210 nm, using external standard calibration. |
| Related Substances | HPLC-UV | Separation and quantification of impurities using gradient HPLC with UV detection and reference standards. |
| Residual Solvents | GC-FID | Detection and quantification of volatile organic solvents (e.g., methanol, toluene) by gas chromatography with flame ionization detection. |
| Water Content | Karl Fischer Titration | Coulometric or volumetric titration with iodine-based reagent to determine trace water content. |
| Optical Rotation | Polarimetry | Measurement of specific rotation using sodium D-line light to confirm chiral integrity and enantiomeric purity. |
| Heavy Metals | ICP-OES | Multi-element quantification of Pb, Cd, Hg, As, and others after acid digestion, based on atomic emission intensity. |
| Chloride Impurity | Ion Chromatography | Separation and quantification of chloride ions using suppressed conductivity detection. |
| Residual Palladium | ICP-MS | Ultra-trace quantification of palladium catalyst residues after microwave digestion, using mass spectrometry detection. |
| Melting Point | Capillary Melting Point Apparatus | Determination of temperature range at which solid transitions to liquid, indicating crystallinity and purity. |
| Appearance | Visual Inspection | Assessment of physical state, color, and homogeneity against established reference standard under controlled lighting. |
| Particle Size Distribution | Laser Diffraction | Measurement of particle size distribution in suspension using Mie scattering theory. |
| Microbial Limits | Membrane Filtration / TSA/SDA | Enumeration of aerobic microorganisms and detection of molds/yeasts using standardized culture media and incubation. |
Technical Specifications of Z-D-ASP(OBZL)-OH
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Purity | >=98.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 128°C to 132°C |
| Optical Rotation | -15.0° to -17.0° (c=1, in 1M HCl) |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=10 ppm |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
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Download COA of Z-D-ASP(OBZL)-OH
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Z-D-ASP(OBZL)-OH
Packaging of Z-D-ASP(OBZL)-OH
Industrial Z-D-ASP(OBZL)-OH Procurement FAQ
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.
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