L-Selenomethionine Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 3211-76-5 |
| Product name | L-Selenomethionine |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeFood 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 L-Selenomethionine
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk L-Selenomethionine Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of L-Selenomethionine
| Industry | Application | Process |
|---|---|---|
| Nutritional Supplements | Selenium nutritional fortificant | Added as an organic selenium source to dietary supplements and functional foods for prevention of selenium deficiency |
| Pharmaceuticals | Antioxidant and immune modulator | Used in the preparation of pharmaceuticals or health products with antioxidant, anti-inflammatory, and immune-enhancing properties |
| Animal Feed | Selenium supplement for livestock and poultry | Incorporated into animal feed to elevate selenium levels in livestock and poultry, thereby improving growth performance and reproductive capacity |
| Biological Research | Cell culture additive | Supplied as a bioavailable selenium source in cell culture systems to study selenoprotein synthesis and associated biological functions |
| Food Industry | Production of selenium-enriched foods | Applied as a selenium source in the production of functional foods such as selenium-enriched eggs and milk, leveraging animal metabolism to increase dietary selenium content |
Manufacturing Quality Control of L-Selenomethionine
| Test Item | Common Test Methods | Method Summary |
|---|---|---|
| Identification | Infrared Spectroscopy (IR) | Determine the infrared absorption spectrum of the sample and compare it with standard spectra to confirm molecular structural characteristics. |
| Proton Nuclear Magnetic Resonance (¹H NMR) | Use NMR technology to analyze the chemical environment of hydrogen atoms, verifying the structural features of L-selenomethionine. | |
| Assay | High-Performance Liquid Chromatography (HPLC) | Utilize a reversed-phase C18 column with UV or evaporative light scattering detection; quantify the main component using external or internal standard methods. |
| Amino Acid Analyzer | Separate amino acids via ion-exchange chromatography followed by post-column derivatization (e.g., with ninhydrin or OPA), then detect amino acid content. | |
| Selenium Content | Inductively Coupled Plasma Mass Spectrometry (ICP-MS) | Digest the sample and use ICP-MS for highly sensitive determination of total selenium content to verify compliance with specified levels. |
| Atomic Absorption Spectroscopy (AAS) | Determine selenium content using flame or graphite furnace atomic absorption spectroscopy; suitable for quantitative analysis of macro or trace amounts of selenium. | |
| Related Substances / Impurity Profiling | High-Performance Liquid Chromatography (HPLC) | Apply gradient elution to separate and detect potential impurities (e.g., D-selenomethionine, oxidation products). |
| Specific Optical Rotation | Polarimetry | Measure the optical rotation of the sample solution at a specified wavelength (typically sodium D line, 589 nm) and temperature, then calculate the specific optical rotation. |
| Loss on Drying | Thermogravimetric Analysis (TGA) or Loss on Drying Method | Dry the sample to constant weight at a specified temperature (e.g., 105°C), then calculate the percentage weight loss to assess moisture and volatile content. |
| Sulfated Ash / Residue on Ignition | High-Temperature Ignition Method | Ignite the sample at high temperature (typically 700–800°C) to ash, then weigh the residue to evaluate inorganic impurity content. |
| pH Value | pH Meter Method | Prepare an aqueous solution of defined concentration and measure its acidity or alkalinity using a calibrated pH meter. |
| Microbial Limits | Microbiological Culture Method | Perform testing according to pharmacopoeial methods for aerobic bacteria, molds/yeasts, and specified control organisms to assess microbial contamination levels. |
Technical Specifications of L-Selenomethionine
| Test Item | Specification |
|---|---|
| Appearance | White to off-white powder |
| Purity | ≥98.0% |
| Selenium | 39.0%~41.0% |
| Na | ≤0.1% |
| Heavy metals as Pb | ≤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 L-Selenomethionine
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of L-Selenomethionine
Packaging of L-Selenomethionine
Industrial L-Selenomethionine 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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