L-(-)-O-TOSYLLACTIC ACID ETHYL ESTER Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 57057-80-4 |
| Product name | L-(-)-O-TOSYLLACTIC ACID ETHYL ESTER |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeMaterial GradeSpecialty GradeReagent GradeCosmetic GradeFood 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 L-(-)-O-TOSYLLACTIC ACID ETHYL ESTER
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk L-(-)-O-TOSYLLACTIC ACID ETHYL ESTER Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of L-(-)-O-TOSYLLACTIC ACID ETHYL ESTER
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Used as a chiral intermediate in drug synthesis | Prepared via esterification or chiral resolution |
| Pesticides | Synthesis of enantiomerically pure pesticide active ingredients | Employed as a key chiral building block in asymmetric synthesis |
| Materials Science | Preparation of chiral materials or functional polymers | Incorporated via polymerization or copolymerization with other monomers |
| Fine Fragrances | Chiral precursor in fragrance synthesis | Serves as a starting material in the synthesis of ester-based fragrances |
| Chemical Reagents | Provides chiral environments for other organic synthetic reactions | Applied in catalyzing asymmetric reactions or as a chiral auxiliary |
Manufacturing Quality Control of L-(-)-O-TOSYLLACTIC ACID ETHYL ESTER
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantification using reverse-phase HPLC with UV detection at 220 nm, calibrated against certified reference standard. |
| Enantiomeric Excess (ee) | Chiral HPLC | Separation on a chiral stationary phase followed by UV detection to determine ratio of L-(-) enantiomer to racemate. |
| Residual Solvents | GC-FID | Headspace gas chromatography with flame ionization detection for quantification of common organic solvents (e.g., ethanol, ethyl acetate). |
| Water Content | Karl Fischer Titration | Volumetric or coulometric titration using iodine-based reagent to measure trace water content in the sample. |
| Heavy Metals | ICP-OES | Inductively coupled plasma optical emission spectrometry for simultaneous detection of Pb, Cd, Hg, As, and other regulated metals. |
| Chloride Impurity | Ion Chromatography | Separation and quantification of chloride ions using anion-exchange column with conductivity detection. |
| Sulfate Impurity | Turbidimetric Method | Reaction with barium chloride under acidic conditions to form BaSO4 precipitate; turbidity measured at 420 nm. |
| Appearance | Visual Inspection | Assessment of physical state, color, and clarity against established reference standards under controlled lighting. |
| Melting Point | Capillary Melting Point Apparatus | Determination of temperature range over which solid transitions to liquid using calibrated capillary apparatus. |
| Specific Optical Rotation | Polarimetry | Measurement of rotation angle of plane-polarized light at 20 degrees C using sodium D-line (589 nm). |
| Residual Catalyst (Pd) | ICP-MS | Inductively coupled plasma mass spectrometry for ultra-trace detection of palladium from asymmetric synthesis catalysts. |
| pH of Aqueous Solution | Potentiometric pH Measurement | Direct measurement using calibrated glass electrode in saturated aqueous suspension at 25 degrees C. |
Technical Specifications of L-(-)-O-TOSYLLACTIC ACID ETHYL ESTER
| Test Item | Specification |
|---|---|
| Appearance | Pale-yellow semi-solid |
| Purity | >=98.0% (GC-MS) |
| Optical Rotation | -38.0 to -35.0 deg (c=1, in CHCl3) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Melting Point | 45.0 to 49.0 °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
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Download COA of L-(-)-O-TOSYLLACTIC ACID ETHYL ESTER
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of L-(-)-O-TOSYLLACTIC ACID ETHYL ESTER
Safety Information of L-(-)-O-TOSYLLACTIC ACID ETHYL ESTER
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of L-(-)-O-TOSYLLACTIC ACID ETHYL ESTER
Industrial L-(-)-O-TOSYLLACTIC ACID ETHYL ESTER 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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