Boc-S-Benzyl-L-cysteine Bulk Supply for Industrial Use
China Factory Direct
 |
|
| CAS number | 5068-28-0 |
| Product name | Boc-S-Benzyl-L-cysteine |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial GradeSpecialty GradeFood 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) |
QUOTE TYPE
PACKAGING TYPE
TOTAL QUANTITY(KG)
PREFERRED SHIPPING METHOD
YOUR COMPANY
YOUR E-MAIL
Calculate Summary
Based on current marketvolatility and material availability.
Documents We Provide for Boc-S-Benzyl-L-cysteine
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Boc-S-Benzyl-L-cysteine Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Boc-S-Benzyl-L-cysteine
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Synthetic intermediate in drug synthesis | Peptide chain assembly via Boc protecting group introduction |
| Chemicals | Organic synthesis reagent | Deprotection under acidic conditions to generate cysteine |
| Biotechnology | Protein modification or peptide-based drug development | Coupling reaction to introduce into target molecules |
| Food additives | Development of functional food ingredients | Amino acid derivative used in nutritional supplement synthesis |
Manufacturing Quality Control of Boc-S-Benzyl-L-cysteine
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantitative determination using reversed-phase HPLC with UV detection at 210–220 nm, comparing peak area against a certified reference standard. |
| Enantiomeric Purity | Chiral HPLC | Separation of L- and D-enantiomers on a chiral stationary phase, with UV detection to calculate enantiomeric excess (ee). |
| Residual Solvents | GC-FID | Headspace gas chromatography with flame ionization detection to quantify residual solvents (e.g., DMF, methanol, ethyl acetate) against calibrated standards. |
| Water Content | Karl Fischer Titration | Volumetric or coulometric titration using iodine-based reagent to determine trace water content based on stoichiometric reaction. |
| Heavy Metals (as Pb) | ICP-MS | Multi-element quantification of heavy metals (Pb, Cd, Hg, As) after acid digestion, using isotopic detection for high sensitivity and specificity. |
| Residual Palladium | ICP-OES | Quantification of palladium residues (from deprotection catalysts) after microwave-assisted digestion, using plasma emission spectroscopy. |
| Appearance (Color & Clarity) | Visual Inspection | Comparison of sample solution (in specified solvent, e.g., methanol/water) against standard color scales (e.g., APHA) under controlled lighting. |
| Optical Rotation | [α]D | Measurement of specific rotation at 589 nm (Na D-line) using a polarimeter, confirming chiral integrity and concentration-corrected identity. |
| Related Substances | HPLC-UV (Gradient) | Separation and quantification of structurally related impurities (e.g., Boc-L-Cys, des-Boc species, oxidation products) using gradient elution and UV detection. |
| Residual Chloride | Ion Chromatography (IC) | Quantification of chloride anion via suppressed conductivity detection after separation on an anion-exchange column. |
| pH (1% w/v aqueous solution) | Potentiometric pH Measurement | Direct measurement using calibrated pH electrode in a standardized aqueous suspension/solution. |
| Loss on Drying (LOD) | Thermogravimetric Analysis (TGA) or Oven Drying | Weight loss measured after heating under controlled temperature and time to determine volatile content including residual solvents and moisture. |
| Microbial Limits | Membrane Filtration + Culture | Enumeration of aerobic microorganisms and detection of specified pathogens (e.g., E. coli, S. aureus) per pharmacopeial limits (USP <61>/<62>). |
Technical Specifications of Boc-S-Benzyl-L-cysteine
| Test Item | Specification |
|---|---|
| Appearance | White to almost white crystalline powder |
| Purity | >=98.0% (LC-MS) |
| Water Content (KF) | <=0.5% |
| Optical Rotation | -46.0 to -44.0 deg (c=1, in 1M HCl) |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Melting Point | 138 to 142 °C |
| Identification (NMR) | Conforms to reference spectrum |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
|
|
Download COA of Boc-S-Benzyl-L-cysteine
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Boc-S-Benzyl-L-cysteine
Packaging of Boc-S-Benzyl-L-cysteine
Industrial Boc-S-Benzyl-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.
Use Bulk
Supply Factory
Direct ISO 9001
Certified Samples
Available Stable
Supply