S-Trityl-L-cysteine Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 2799-07-7 |
| Product name | S-Trityl-L-cysteine |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty GradeIndustrial 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) |
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Documents We Provide for S-Trityl-L-cysteine
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk S-Trityl-L-cysteine Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of S-Trityl-L-cysteine
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Synthetic drug intermediate | Protects thiol groups during organic synthesis reactions |
| Chemicals | Thiol-protecting reagent | Prevents oxidation or side reactions of thiols during chemical processes |
| Materials Science | Synthesis of functional materials | Prepares polymeric materials with specific functionalities |
| Biotechnology | Biomolecule modification | Modifies thiol groups in proteins or nucleic acids |
Manufacturing Quality Control of S-Trityl-L-cysteine
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantitative determination using reversed-phase HPLC with UV detection at 254 nm, comparing peak area against a certified reference standard. |
| Chiral Purity | Chiral HPLC | Enantiomeric excess assessment using a chiral stationary phase and UV detection, resolving S- and R-enantiomers. |
| Water Content | Karl Fischer Titration | Volumetric or coulometric titration with iodine-based reagent to quantify water via stoichiometric redox reaction. |
| Residual Solvents | GC-FID | Headspace gas chromatography with flame ionization detection for quantification of common organic solvents (e.g., methanol, acetone, DMF). |
| Heavy Metals | ICP-MS | Multi-element trace metal analysis after acid digestion, based on mass-to-charge ratio detection of metal isotopes. |
| Sulfur Content | Combustion IC | Oxidative combustion followed by ion chromatographic detection of sulfate ions in the absorption solution. |
| Specific Optical Rotation | Polarimetry | Measurement of rotation angle of plane-polarized light at 20 C and 589 nm to confirm chiral integrity and concentration. |
| pH (1% w/v aqueous solution) | Potentiometric pH Measurement | Direct pH measurement using calibrated glass electrode in aqueous suspension after equilibration. |
| Related Substances | HPLC-UV | Detection and quantification of structurally related impurities (e.g., des-trityl, oxidation products) using gradient HPLC-UV. |
| Residue on Ignition | Gravimetric Analysis | Weight loss determination after high-temperature ashing to assess inorganic residue content. |
| Particle Size Distribution | Laser Diffraction | Analysis of dry powder dispersion using laser scattering principles to determine D10, D50, D90 values. |
| Microbial Limits | Membrane Filtration | Quantitative enumeration of aerobic microorganisms and absence testing for specified pathogens per USP <61> and <62>. |
Technical Specifications of S-Trityl-L-cysteine
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 178°C - 182°C |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Optical Rotation | -15.0° to -19.0° (c=1, in 1M HCl) |
| Heavy Metals | <=20 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 S-Trityl-L-cysteine
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of S-Trityl-L-cysteine
Packaging of S-Trityl-L-cysteine
Industrial S-Trityl-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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