CBZ-S-Phenyl-L-cysteine Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 159453-24-4 |
| Product name | CBZ-S-Phenyl-L-cysteine |
| 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 CBZ-S-Phenyl-L-cysteine
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk CBZ-S-Phenyl-L-cysteine Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of CBZ-S-Phenyl-L-cysteine
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Peptide synthesis and drug development | Used as a chiral raw material or protected amino acid in solid-phase peptide synthesis (SPPS) |
| Chemicals | Organic synthesis intermediate | Applied in peptide chain assembly and directed synthesis of complex organic molecules |
Manufacturing Quality Control of CBZ-S-Phenyl-L-cysteine
| 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 254 nm. |
| Chiral Purity | Chiral HPLC | Separation of enantiomers on a chiral stationary phase; L-isomer content determined by relative peak area. |
| Residual Solvents | GC-FID | Identification and quantification of volatile organic solvents based on retention time and flame ionization detector response. |
| Water Content | Karl Fischer Titration | Volumetric or coulometric titration measuring water via iodine-sulfur dioxide reaction in pyridine/methanol medium. |
| Heavy Metals | ICP-OES | Multi-element detection of Pb, Cd, Hg, As, and other metals after acid digestion, based on atomic emission intensity. |
| Residual Palladium | ICP-MS | Ultra-trace quantification of Pd catalyst residues using mass spectrometry detection after microwave-assisted digestion. |
| Related Substances | HPLC-UV | Detection and quantification of structurally similar impurities (e.g., deprotected cysteine, dimer, oxidation products) using gradient elution. |
| Optical Rotation | [alpha]D Measurement | Determination of specific rotation using a polarimeter at 20 C and sodium D-line (589 nm) to confirm chiral integrity. |
| pH of Aqueous Solution | Potentiometric Titration | Measurement of hydrogen ion activity in a 1% w/v aqueous suspension using calibrated pH electrode. |
| Loss on Drying | Gravimetric Analysis | Mass loss upon heating at 105 C for 2 hours under vacuum, indicating volatile matter and residual moisture. |
| Particle Size Distribution | Laser Diffraction | Analysis of dry powder dispersion using light scattering principles to determine D10, D50, D90 values. |
| Microbial Limits | Membrane Filtration | Enumeration of aerobic microorganisms and detection of specified pathogens (e.g., E. coli, S. aureus) per USP <61> and <62>. |
Technical Specifications of CBZ-S-Phenyl-L-cysteine
| 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 | 148°C - 152°C |
| Optical Rotation | -22.0° to -26.0° (c=1, in 1M HCl) |
| 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 CBZ-S-Phenyl-L-cysteine
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of CBZ-S-Phenyl-L-cysteine
Industrial CBZ-S-Phenyl-L-cysteine 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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