(S)-(-)-3-(Benzoylthio)-2-methylpropanoic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 72679-02-8 |
| Product name | (S)-(-)-3-(Benzoylthio)-2-methylpropanoic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial 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)-(-)-3-(Benzoylthio)-2-methylpropanoic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk (S)-(-)-3-(Benzoylthio)-2-methylpropanoic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of (S)-(-)-3-(Benzoylthio)-2-methylpropanoic acid
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Key chiral intermediate for angiotensin-converting enzyme inhibitors (ACEIs), such as captopril | Prepared via asymmetric synthesis or chiral resolution to construct thiol-containing chiral building blocks, which are subsequently used in condensation, cyclization, and other steps to synthesize the target drug molecule |
Manufacturing Quality Control of (S)-(-)-3-(Benzoylthio)-2-methylpropanoic acid
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantitative determination using reverse-phase HPLC with UV detection at 210-230 nm, comparing peak area against a certified reference standard. |
| Enantiomeric Excess (ee) | Chiral HPLC | Separation of (R)- and (S)-enantiomers on a chiral stationary phase, with UV detection and calculation of ee from peak area ratio. |
| Loss on Drying (LOD) | Gravimetric Thermogravimetry | Mass loss measured after drying sample at 105 C for 2 hours under vacuum or nitrogen purge. |
| Residual Solvents | GC-FID | Quantification of common organic solvents (e.g., methanol, acetone, ethyl acetate) using gas chromatography with flame ionization detection. |
| Heavy Metals (as Pb) | ICP-OES | Multi-element quantification of heavy metals (Pb, Cd, Hg, As, Cr) after acid digestion, using inductively coupled plasma optical emission spectrometry. |
| Chloride Impurity | Ion Chromatography | Separation and quantification of chloride ions using anion-exchange column with suppressed conductivity detection. |
| Sulfur Content | Combustion IC | Total sulfur determined by high-temperature combustion followed by ion chromatographic detection of sulfate. |
| Water Content | Karl Fischer Titration | Volumetric or coulometric titration with iodine reagent to quantify water based on stoichiometric reaction. |
| Appearance | Visual Inspection | Assessment of physical state, color, and clarity against defined standards under controlled lighting and viewing conditions. |
| Melting Point | Capillary Melting Point Apparatus | Determination of temperature range over which solid transitions to liquid, using calibrated capillary apparatus per USP <741>. |
| Specific Optical Rotation | [alpha]D | Measurement of rotation angle of plane-polarized light at 589 nm using sodium D-line, reported as deg*cm2/g. |
| Related Substances | HPLC-UV (Forced Degradation) | Identification and quantification of degradation products and impurities using gradient HPLC-UV after acid/base/oxidative/thermal stress testing. |
Technical Specifications of (S)-(-)-3-(Benzoylthio)-2-methylpropanoic acid
| Test Item | Specification |
|---|---|
| Appearance | White to almost white powder or crystals |
| Purity | >=98.0% (LC-MS) |
| Optical Rotation | -45.0 to -41.0 deg (c=1, in methanol) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Melting Point | 78.0 to 82.0 °C |
| 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)-(-)-3-(Benzoylthio)-2-methylpropanoic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of (S)-(-)-3-(Benzoylthio)-2-methylpropanoic acid
Safety Information of (S)-(-)-3-(Benzoylthio)-2-methylpropanoic acid
| Pictograms |   |
| Signal Word | Danger |
| Safety Data Sheet | |
Packaging of (S)-(-)-3-(Benzoylthio)-2-methylpropanoic acid
Industrial (S)-(-)-3-(Benzoylthio)-2-methylpropanoic acid 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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