CYSTEINE(FM)-OH Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 84888-38-0 |
| Product name | CYSTEINE(FM)-OH |
| 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 CYSTEINE(FM)-OH
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk CYSTEINE(FM)-OH Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of CYSTEINE(FM)-OH
| Industry | Application | Process |
|---|---|---|
| Pharmaceutical R&D | Peptide synthesis intermediate | Used in solid-phase or solution-phase peptide synthesis to introduce protected amino acid units into the sequence; the Fmoc group enables controlled deprotection and coupling reactions |
| Biochemical research | Sulfur-containing amino acid analog synthesis | Applied in synthesizing peptides and protein mimetics with defined conformation or function for structure–activity relationship studies |
| Organic synthesis | Chiral building block | Employed as a chiral source in asymmetric synthesis to construct complex molecules, particularly for targeted synthesis of pharmaceuticals or bioactive compounds |
Manufacturing Quality Control of CYSTEINE(FM)-OH
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantifies main component using reversed-phase HPLC with UV detection at 265 nm, comparing peak area to calibrated standard. |
| Related Substances | HPLC-UV | Detects and quantifies impurities (e.g., diastereomers, oxidation products) via gradient HPLC with UV detection. |
| Optical Rotation | [alpha]D | Measures specific rotation in solution using a polarimeter to confirm chiral integrity and enantiomeric purity. |
| Water Content | Karl Fischer Titration | Determines trace water by coulometric or volumetric titration with iodine-based reagent reacting stoichiometrically with water. |
| Residue on Ignition | Gravimetric Analysis | Measures non-volatile inorganic residue after controlled high-temperature ashing of sample. |
| Heavy Metals | ICP-OES | Quantifies elemental impurities (e.g., Pb, Cd, Ni, Cu) by plasma excitation and atomic emission spectroscopy. |
| Chloride Content | Potentiometric Titration | Titrates chloride ions with silver nitrate using silver indicator electrode for endpoint detection. |
| Sulfate Content | Turbidimetric Method | Measures sulfate as barium sulfate precipitate; quantifies turbidity at 420 nm proportional to sulfate concentration. |
| pH (1% w/v aqueous solution) | pH Meter Measurement | Determines hydrogen ion activity in aqueous solution using calibrated glass electrode system. |
| Loss on Drying | Thermogravimetric Analysis | Measures mass loss upon heating under controlled conditions (e.g., 105 C, 2 h) to assess volatile content. |
| Particle Size Distribution | Laser Diffraction | Analyzes size distribution by measuring angular variation in laser light scattering from dispersed particles. |
| Microbial Limits | Membrane Filtration | Detects and enumerates aerobic microorganisms using filtration, membrane transfer to culture media, and colony counting. |
Technical Specifications of CYSTEINE(FM)-OH
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 142-146°C |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Optical Rotation | +15.0° to +19.0° (c=1, in DMF) |
| 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 CYSTEINE(FM)-OH
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of CYSTEINE(FM)-OH
Industrial CYSTEINE(FM)-OH 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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