DL-Homocystine Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 870-93-9 |
| Product name | DL-Homocystine |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeReagent 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 DL-Homocystine
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk DL-Homocystine Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of DL-Homocystine
| Industry | Application | Process |
|---|---|---|
| Pharmaceutical R&D | Reagent for sulfur-containing amino acid research | Used in synthesis or metabolic pathway studies |
| Biochemistry | Protein structure and redox studies | Applied to model disulfide bond formation and cleavage mechanisms |
| Laboratory Reagents | Reference standard or control material | Calibration in HPLC or mass spectrometry analysis |
Manufacturing Quality Control of DL-Homocystine
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (DL-Homocystine Content) | Acid-Base Titration with NaOH | Quantifies acidic protons of homocystine using standardized sodium hydroxide solution and potentiometric or visual endpoint detection. |
| Loss on Drying | Gravimetric Method (105 C, 2 h) | Measures weight loss after drying under controlled temperature and time to determine volatile impurities and moisture content. |
| Residue on Ignition | Gravimetric Method (600 C, 30 min) | Determines inorganic ash content by ignition at high temperature followed by weighing of residual residue. |
| Heavy Metals (as Pb) | Colorimetric Method with Thioglycolic Acid | Forms colored metal-thioglycolate complexes in alkaline medium; intensity compared against lead standard. |
| Chloride Impurity | Argentometric Titration (Mohr Method) | Titrates chloride ions with silver nitrate using potassium chromate indicator for endpoint detection. |
| Sulfate Impurity | Barium Sulfate Gravimetric Method | Precipitates sulfate as barium sulfate, filters, dries, and weighs the precipitate. |
| Specific Optical Rotation | Polarimetry | Measures rotation of plane-polarized light by chiral DL-homocystine in solution at specified concentration and wavelength. |
| pH of Aqueous Solution | Potentiometric pH Measurement | Determines hydrogen ion activity in a defined aqueous suspension using calibrated pH electrode. |
| Related Substances | Reverse-Phase HPLC with UV Detection | Separates and quantifies structurally related impurities using C18 column and UV absorbance at 210 nm. |
| Residual Solvents | Gas Chromatography (GC-FID) | Detects and quantifies common organic solvents (e.g., methanol, acetone) using flame ionization detection. |
| Microbial Contamination | Membrane Filtration and Plate Count | Enumerates aerobic microorganisms by filtration, membrane transfer to culture media, and colony counting after incubation. |
| Particle Size Distribution | Laser Diffraction Analysis | Determines size distribution of solid particles in suspension based on angular scattering pattern of laser beam. |
Technical Specifications of DL-Homocystine
| Test Item | Specification |
|---|---|
| Appearance | Off-white crystalline solid |
| Purity | >=98.0% |
| Water Content (KF) | <=0.5% |
| Melting Point | 210-215°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
| Optical Rotation | +/- 0.5° (c=1, H2O) |
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 DL-Homocystine
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of DL-Homocystine
Packaging of DL-Homocystine
Industrial DL-Homocystine 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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