Fmoc-L-cysteic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 751470-47-0 |
| Product name | Fmoc-L-cysteic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical 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 Fmoc-L-cysteic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Fmoc-L-cysteic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Fmoc-L-cysteic acid
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | As an amino acid derivative intermediate for synthesizing peptide-based drugs | Used as an Fmoc-protected cysteine analog in solid-phase peptide synthesis (SPPS) to incorporate the thiopropionic acid moiety |
| Biochemistry | For research on peptides containing sulfur-containing side chains | Applied as a protecting reagent in peptide synthesis to stabilize thiol groups and control oxidation state, facilitating subsequent deprotection and coupling |
Manufacturing Quality Control of Fmoc-L-cysteic acid
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantification by peak area comparison against a certified reference standard using reversed-phase chromatography and UV detection at 254 nm. |
| Chiral Purity | (R)-Enantiomeric Excess | Chiral HPLC with chiral stationary phase; enantiomer separation based on differential interaction with chiral selector, quantified via peak area ratio. |
| Residual Solvents | GC-FID | Separation and quantification of volatile organic solvents (e.g., DMF, THF, DCM) using capillary GC with flame ionization detection. |
| Water Content | Karl Fischer Titration | Volumetric or coulometric titration where iodine reacts stoichiometrically with water in anhydrous methanol-based medium. |
| Heavy Metals | ICP-MS | Multi-element detection and quantification of toxic metals (e.g., Pb, Cd, Ni, Pd) after acid digestion, based on mass-to-charge ratio detection. |
| Residual Palladium | ICP-OES | Quantification of residual palladium catalyst by plasma excitation and element-specific emission wavelength measurement. |
| Loss on Drying | Gravimetric Analysis | Mass loss measured after controlled heating under vacuum or nitrogen to remove volatile impurities and residual solvents. |
| Acid Value | Acid-Base Titration | Neutralization of carboxylic acid groups with standardized NaOH solution using phenolphthalein or potentiometric endpoint detection. |
| Particle Size Distribution | Laser Diffraction | Analysis of scattered laser light intensity as a function of angle to determine size distribution of solid particles in suspension. |
| Appearance | Visual Inspection | Assessment of physical state, color, and presence of foreign particles under controlled white light against standard reference samples. |
| Residual Fmoc Chloride | GC-MS | Detection and quantification of unreacted Fmoc-Cl by gas chromatographic separation followed by mass spectrometric identification and quantitation. |
| Related Substances | HPLC-UV | Identification and quantification of structurally related impurities (e.g., deprotected, hydrolyzed, or dimeric species) using gradient reversed-phase HPLC. |
Technical Specifications of Fmoc-L-cysteic acid
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Purity | >=98.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 142°C - 146°C |
| Optical Rotation | +15.0° to +17.0° (c=1, in DMF) |
| 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 Fmoc-L-cysteic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Fmoc-L-cysteic acid
Packaging of Fmoc-L-cysteic acid
Industrial Fmoc-L-cysteic 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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