Molekula
Silymarin
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Silymarin is a flavonolignan complex extracted from milk thistle seeds, widely used for its hepatoprotective and antioxidant properties. It is commonly employed in dietary supplements and pharmaceutical formulations. Available with CAS number 22888-70-6, molecular formula C25H22O10, and molecular weight 482.44 g/mol. Stored at -15 to -20 °C. Signal word: Warning. Molekula supplies Silymarin from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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5 g — £30.90 per pack ex VAT · £37.08 inc. VAT
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25 g — £124.50 per pack ex VAT · £149.40 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Pale yellow fine powder |
| Loss on Drying | <3% |
| Assay | ≥80% |
| Sulphated Ash | <1% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | -15 to -20 °C |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 17270291 |
| CAS Number | 22888-70-6 |
| IUPAC Name | (2R,3R)-3,5,7-trihydroxy-2-[(2R,3R)-3-(4-hydroxy-3-methoxyphenyl)-2-(hydroxymethyl)-2,3-dihydro-1,4-benzodioxin-6-yl]-2,3-dihydrochromen-4-one |
| EC Number | 245-302-5 |
| Molecular Formula | C25H22O10 |
| Molecular Weight | 482.44 |
| Exact Mass | 482.1213 |
| SMILES | COC1=C(C=CC(=C1)[C@@H]2[C@H](OC3=C(O2)C=C(C=C3)[C@@H]4[C@H](C(=O)C5=C(C=C(C=C5O4)O)O)O)CO)O |
| InChIKey | SEBFKMXJBCUCAI-HKTJVKLFSA-N |
| InChI | InChI=1S/C25H22O10/c1-32-17-6-11(2-4-14(17)28)24-20(10-26)33-16-5-3-12(7-18(16)34-24)25-23(31)22(30)21-15(29)8-13(27)9-19(21)35-25/h2-9,20,23-29,31H,10H2,1H3/t20-,23+,24-,25-/m1/s1 |
| PubChem CID | 31553 |
| REACH Code | Y110 |
| HTS Code | 2932.99.70.00 |
| Tariff Code | 2932990090 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H302 Harmful if swallowed
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
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
- Flavobin
- Legalon
- silibinin
- Silibinina
- Silibinine
- Silibininum
- Silliver
- Silybine
- Silymarin I
- Silymarine I
Frequently asked questions
What is Silymarin used for?
Silymarin is primarily used for its hepatoprotective properties, supporting liver health and function, and is also studied for antioxidant and anti-inflammatory effects.
What is the chemical formula and molecular weight of Silymarin?
The formula is C25H22O10 with a molecular weight of 482.44 g/mol.
How should Silymarin be stored?
Silymarin should be stored at temperatures between -15 to -20 °C to maintain stability and prevent degradation.
What grade of Silymarin does Molekula supply?
Molekula supplies Silymarin in research-grade quality, suitable for laboratory and pharmaceutical research applications.
Can Molekula supply Silymarin in bulk?
Yes, Molekula can supply Silymarin in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with a Silymarin order?
Each order includes a Certificate of Analysis (CoA) and safety data sheet (SDS); additional documentation can be provided upon request.
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.