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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 5213Generated: November 3, 2026

Silymarin

Silybum marianum, ext. · Unii-822I9lej7s · Einecs 283-298-7 · Silymarin 80% UV · Fly thistle extract · Milk Thistle Extract · Silymarin, Silymarine · Lady'S thistle extract

https://huagongshe.com/en/chemical/5213

Silymarin molecular structure

Identifiers & Physical Properties

CAS No.22888-70-6
Molecular formulaC25H22O10
Average molar mass482.4 g/mol
Monoisotopic mass482.12129689 g/mol
SMILESCOc1cc(C2Oc3cc(C4Oc5cc(O)cc(O)c5C(=O)C4O)ccc3OC2CO)ccc1O
InChIKeySEBFKMXJBCUCAI-UHFFFAOYSA-N
PubChem CID5213
ChEMBLCHEMBL4630684
ChEBICHEBI:125451
EC No.613-830-9
DTXSIDDTXSID00860287

Chemical & Physical Properties

XLogP2.4
Topological polar surface area155
Hydrogen bond donors5
Hydrogen bond acceptors10
Rotatable bonds4
Heavy atoms35
Formal charge0
Complexity750
DrugsPharmaceuticals -> Used in Switzerland
CosmeticsSkin conditioning
LogP (partition coefficient)2.07
Melting point167 °C
Physical DescriptionSolid
Density1.144
Vapor pressure0.004Pa at 20℃
Henry's law constant6.2×1017 mol/(m3Pa) at 25℃, HSDB (2015)
Cosmetics Ingredients FunctionsSKIN CONDITIONING - EMOLLIENTSKIN PROTECTINGSKIN CONDITIONING
InChIKeySEBFKMXJBCUCAI-REIQKMFONA-N
SMILES[C@@H]1(C2=CC=C3O[C@@H](CO)[C@@H](C4=CC=C(O)C(OC)=C4)OC3=C2)OC2=C(C(O)=CC(O)=C2)C(=O)C1O |&1:0,6,9,r|
Toxicology and CarcinogenesisToxicology and Carcinogenesis Studies of Milk Thistle Extract (CASRN 84604-20-6) in F344/N Rats and B6C3F1 Mice (Feed studies)
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH412-H317-H226
GHS precautionary statementsP261-P272-P280-P302+P352-P333+P313-P321-P363-P501-P273-P501
Customs code2932996560
Hazardous substances data84604-20-6(Hazardous Substances Data)
REACH registrationsActive

Safety & Regulations

GHS classificationWarningH361 (98.2%): Suspected of damaging fertility or the unborn child [Warning Reproductive toxicity]P203, P260, P280, P318, P319, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 56 reports by companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Regulatory informationChemical: SilymarinChemical: Silybum marianum extractSilymarin: Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.
Other safety informationEvaluation - Chemicals not considered for in depth evaluation - Not commercially active in AustraliaIMAP assessments - Silybum marianum extract: Environment tier I assessment
Hazard Classes and CategoriesRepr. 2 (98.2%)
Customs code2932996560
Signal wordWarning
GHS pictogramGHS07
GHS hazard statementsH412-H317-H226
REACH registrationsActive
GHS precautionary statementsP261-P272-P280-P302+P352-P333+P313-P321-P363-P501-P273-P501
Hazardous substances data84604-20-6(Hazardous Substances Data)

Applications & Uses

Description

Milk Thistle Extract is prepared from the milk thistle. This plant belongs to the sunflower family and has been revered for thousands of years as an effective healing herb. Milk Thistle extract is popular in Europe and the United States as it is used for various liver diseases. It is also used for viral hepatitis, acute and chronic hepatitis, cirrhosis, fatty liver, nutritional and metabolic disease, and cardiovascular disease.