L-CYSTEIC ACID MONOHYDRATE Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 23537-25-9 |
| Product name | L-CYSTEIC ACID MONOHYDRATE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial GradeSpecialty 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-CYSTEIC ACID MONOHYDRATE
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk L-CYSTEIC ACID MONOHYDRATE Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of L-CYSTEIC ACID MONOHYDRATE
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Intermediate for synthesizing sulfur-containing amino acid-based drugs | Produced via reaction of L-alanine with sodium bisulfite under acidic conditions, followed by crystallization and purification to yield the monohydrate |
| Chemicals | Chiral ligand or auxiliary in asymmetric catalysis | Coordinated with metal ions in aqueous solution after pH adjustment, for construction of catalytic systems |
| Biotechnology | Thioamino acid model compound for biochemical research | Purified via enzymatic or chemical synthesis for use in metabolic pathway studies |
Manufacturing Quality Control of L-CYSTEIC ACID MONOHYDRATE
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (L-Sulfopropanoic Acid Monohydrate) | Acid-Base Titration | Quantitative neutralization of the carboxylic acid group with standardized NaOH using phenolphthalein or potentiometric endpoint detection. |
| Water Content | Karl Fischer Titration | Electrochemical determination of water based on iodine-sulfur dioxide reaction in a methanol-based reagent system. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Measurement of absorbance of ground-state atoms in a flame or graphite furnace after sample digestion and atomization. |
| Sulfate Impurity | Ion Chromatography (IC) | Separation and quantification of sulfate anions using anion-exchange column with suppressed conductivity detection. |
| Chloride Impurity | Potentiometric Titration | Titration with silver nitrate solution using a silver indicator electrode to detect endpoint via potential change. |
| Residue on Ignition | Gravimetric Analysis (Weight Method) | Determination of non-volatile inorganic residue after high-temperature ashing at 700-800 C. |
| Specific Optical Rotation | Polarimetry | Measurement of rotation angle of plane-polarized light caused by chiral L-sulfopropanoic acid molecules in solution. |
| pH (1% aqueous solution) | Potentiometric pH Measurement | Direct measurement of hydrogen ion activity using calibrated glass electrode and reference electrode. |
| Loss on Drying | Thermogravimetric Analysis (TGA) | Quantification of volatile mass loss (mainly water) upon controlled heating under nitrogen or air up to 105 C. |
| Related Substances | High-Performance Liquid Chromatography (HPLC) | Separation and quantification of structurally related impurities using reversed-phase C18 column and UV detection. |
| Iron (Fe) | Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) | Detection of elemental iron emission lines after plasma atomization and excitation of digested sample. |
| Microbial Limits | Membrane Filtration / Plate Count | Enumeration of aerobic microorganisms by filtration, rinsing, and incubation on nutrient agar followed by colony counting. |
Technical Specifications of L-CYSTEIC ACID MONOHYDRATE
| Test Item | Specification |
|---|---|
| Appearance | White crystalline powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Optical Rotation | +7.5±1.0° (c=1, H2O) |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.1% |
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-CYSTEIC ACID MONOHYDRATE
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of L-CYSTEIC ACID MONOHYDRATE
Packaging of L-CYSTEIC ACID MONOHYDRATE
Industrial L-CYSTEIC ACID MONOHYDRATE 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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