L-Valine benzyl ester 4-toluenesulfonate Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 16652-76-9 |
| Product name | L-Valine benzyl ester 4-toluenesulfonate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical 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 L-Valine benzyl ester 4-toluenesulfonate
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk L-Valine benzyl ester 4-toluenesulfonate Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of L-Valine benzyl ester 4-toluenesulfonate
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Intermediate for synthesizing peptide-based drugs; used to construct peptide chains containing valine residues | Employed as a protected amino acid monomer in solid-phase or solution-phase peptide synthesis; participates in amide bond formation following deprotection |
| Biochemical Research | Amino acid derivative used in peptide synthesis and protein engineering studies | Serves as a chiral building block under laboratory conditions; engages in selective condensation reactions to synthesize target peptide sequences |
| Pharmaceutical R&D | Chiral auxiliary or precursor for developing novel antibiotics, antiviral agents, and other therapeutics | Incorporated into active molecular structures via esterification, deprotection, and coupling steps |
Manufacturing Quality Control of L-Valine benzyl ester 4-toluenesulfonate
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantification using reversed-phase HPLC with UV detection at 200-220 nm, comparing peak area to a certified reference standard. |
| Related Substances | HPLC-UV | Separation and detection of structurally related impurities (e.g., L-valine, benzyl alcohol, p-toluenesulfonic acid) using gradient HPLC-UV. |
| Residual Solvents | GC-FID | Headspace GC with flame ionization detection to quantify residual solvents (e.g., methanol, ethyl acetate, toluene) against calibrated standards. |
| Water Content | Karl Fischer Titration | Electrochemical titration with iodine-based reagent to determine trace water content based on stoichiometric reaction with water. |
| Heavy Metals | ICP-OES | Multi-element quantification of Pb, Cd, Hg, As, and Ni after acid digestion, using inductively coupled plasma optical emission spectrometry. |
| Chloride Impurity | Ion Chromatography | Separation and conductivity detection of chloride ions in aqueous extract, compared to chloride standard calibration. |
| Sulfate Impurity | Ion Chromatography | Separation and conductivity detection of sulfate ions in aqueous extract, referenced to sulfate standard calibration. |
| Optical Rotation | [a]D Measurement | Determination of specific optical rotation using a polarimeter at 20 C and sodium D-line (589 nm) to confirm chiral integrity. |
| Melting Point | Capillary Melting Point Apparatus | Thermal analysis by gradual heating of solid sample in capillary tube; onset and range indicate purity and identity. |
| Loss on Drying | Gravimetric Thermogravimetry | Mass loss measured after drying under controlled temperature and vacuum or nitrogen flow, indicating volatile content. |
| pH of Aqueous Solution | Potentiometric pH Measurement | pH determination of a defined suspension or solution using calibrated glass electrode and pH meter. |
| Microbial Limits | Membrane Filtration & Plate Count | Enumeration of aerobic mesophilic microorganisms following filtration, membrane transfer, and incubation on soybean-casein digest agar. |
Technical Specifications of L-Valine benzyl ester 4-toluenesulfonate
| Test Item | Specification |
|---|---|
| Appearance | White solid |
| Purity | >=98.0% (HPLC) |
| Water Content (KF) | <=0.5% |
| Melting Point | 128-132°C |
| Optical Rotation | -4.0 to -3.4 (c=1, in 1M HCl) |
| Total Impurities | <=2.0% (HPLC) |
| Single Impurity | <=0.5% (HPLC) |
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 L-Valine benzyl ester 4-toluenesulfonate
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of L-Valine benzyl ester 4-toluenesulfonate
Safety Information of L-Valine benzyl ester 4-toluenesulfonate
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of L-Valine benzyl ester 4-toluenesulfonate
Industrial L-Valine benzyl ester 4-toluenesulfonate 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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