Molekula
L-(+)-Selenomethionine
L-(+)-Selenomethionine is a selenium-containing amino acid used in nutritional supplements and biochemical research to study selenium metabolism and antioxidant functions. It is a white to off-white crystalline powder with a molecular formula of C5H11NO2Se and a molecular weight of 196.11 g/mol. It is classified as a hazardous substance with a signal word of Danger and must be stored at temperatures between -15 and -20 °C. Molekula supplies L-(+)-Selenomethionine from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
L-(+)-Selenomethionine is a selenium-containing amino acid used in nutritional supplements and biochemical research to study selenium metabolism and antioxidant functions. It is a white to off-white crystalline powder with a molecular formula of C5H11NO2Se and a molecular weight of 196.11 g/mol. It is classified as a hazardous substance with a signal word of Danger and must be stored at temperatures between -15 and -20 °C. Molekula supplies L-(+)-Selenomethionine from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Pricing & pack sizes
Specifications
| Property | Value |
|---|---|
| Appearance | White to off white powder |
| Loss on Drying | ≤1.0% |
| Assay | ≥98% |
| Selenium | 37.2% - 42.9% |
| Identification (IR) | Conforms to reference |
| Infrared Spectrum | Standard- compliant spectra |
| Carbon (anhydrous) | 29.5% - 31.5% |
| Nitrogen (anhydrous) | 6.6% - 7.6% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | -15 to -20 °C |
| Flash Point | 100 C |
| Transport Class | 6.1 |
| Packing Group | III |
| Shelf Life | 24 months |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| CAS Number | 3211-76-5 |
| Molecular Formula | C5H11NO2Se |
| Molecular Weight | 196.11 |
| SMILES | C[Se]CC[C@@H](C(=O)O)N |
| EC / UN Number | 3283 |
| REACH Code | Y110 |
| HTS Code | 29319000 |
| Tariff Code | 2931900090 |
Safety & GHS
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Toxic
GHS06
-
Serious Health Hazard
GHS08
-
Hazardous to the Environment
GHS09
Hazard statements
- H301 Toxic if swallowed
- H331 Toxic if inhaled
- H373 May cause damage to organs through prolonged or repeated exposure
- H400 Very toxic to aquatic life
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P284 Wear respiratory protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P304+312 IF INHALED: Call a POISON CENTER or doctor/physician if you feel unwell
For research and industrial use only
Documents
Safety Data Sheets (SDS)
Available in IT, FR, ES, DE, EN.
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IT - (24764032) L-(+)-SELENOMETHIONINE [3211-76-5].pdf
SDS · IT · 250 KB
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FR - (24764032) L-(+)-SELENOMETHIONINE [3211-76-5].pdf
SDS · FR · 255 KB
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ES - (24764032) L-(+)-SELENOMETHIONINE [3211-76-5].pdf
SDS · ES · 253 KB
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DE - (24764032) L-(+)-SELENOMETHIONINE [3211-76-5].pdf
SDS · DE · 254 KB
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EN - (24764032) L-(+)-SELENOMETHIONINE [3211-76-5].pdf
SDS · EN · 250 KB
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is L-(+)-Selenomethionine used for?
It is used as a selenium source in nutritional supplements and research applications, particularly in studies involving selenium metabolism and antioxidant activity.
What is the chemical formula and molecular weight of L-(+)-Selenomethionine?
The formula is C5H11NO2Se with a molecular weight of 196.11 g/mol.
How should L-(+)-Selenomethionine be stored?
It must be stored at temperatures between -15 and -20 °C to maintain stability and prevent degradation.
What grade of L-(+)-Selenomethionine is available?
We supply L-(+)-Selenomethionine in research grade, suitable for laboratory and scientific use.
Can Molekula supply L-(+)-Selenomethionine in bulk?
Yes, we can supply L-(+)-Selenomethionine in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with an order of L-(+)-Selenomethionine?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS), compliant with regulatory standards.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.