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S0417

Sigma-Aldrich

Silibinin

≥98% (HPLC)

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Synonym(s):
2,3-Dihydro-3-(4-hydroxy-3-methoxyphenyl)-2-(hydroxymethyl)-6-(3,5,7-trihydroxy-4-oxobenzopyran-2-yl)benzodioxin, Silybin
Empirical Formula (Hill Notation):
C25H22O10
CAS Number:
Molecular Weight:
482.44
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.83

Quality Level

assay

≥98% (HPLC)

storage temp.

−20°C

SMILES string

COc1cc(ccc1O)[C@@H]2Oc3cc(ccc3O[C@H]2CO)[C@H]4Oc5cc(O)cc(O)c5C(=O)[C@H]4O

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?/m0/s1

InChI key

SEBFKMXJBCUCAI-ILJKEPSESA-N

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This Item
SML258102000585SML2383
Silibinin ≥98% (HPLC)

S0417

Silibinin

Silychristin Milk Thistle component, ≥95% (HPLC)

SML2581

Silychristin

Silybin mixture of Silybin A and B, primary reference standard

02000585

Silybin

Isosilybin ≥98% (HPLC)

SML2383

Isosilybin

storage temp.

−20°C

storage temp.

2-8°C

storage temp.

-

storage temp.

−20°C

General description

Silibinin, a principal component of silymarin, is a flavonolignan and an orally active flavonoid. It is isolated from the seeds of milk thistle (Sylibum marianum L).

Application

Silibinin has been used:
  • to study its effect on gene expression levels of various proteins involved in chromatin regulations of prostate cancer, by real time polymerase chain reaction (RT-PCR)
  • to study its effect on cell proliferation in platelet-derived growth factor (PDGF)-treated human tenon′s fibroblasts (HTFs) by investigating the expression of proliferating cell nuclear antigen (PCNA) and by water-soluble tetrazolium salt (WST-1) assay
  • to examine its effect on gene expression levels of stromelysine 1 (STM1), acetyl hexoseamines and collagen production during skin wound healing
  • to study its inhibitory effect on Escherichia coli ATP synthase

Biochem/physiol Actions

Silibinin functions as a hepatoprotectant in patients with acute and chronic liver injury. This flavonoid fights against various cancer cells including, prostate, skin, breast, colon, lung, bladder and hepatocellular carcinoma (HCC). Silibinin exhibits its efficacy as an anti-cancer agent by blocking the secretion of proangiogenic factors from tumor cells, and by hindering growth and inducing apoptotic death of endothelial cells. In addition, it also interrupts capillary tube formation on Matrigel. Silibinin might be a good candidate for chemoprevention of prostate cancer (PC). It might be used as a potential therapeutic regimen for the treatment of endometriosis in vitro and in vivo.

Components

Contains both A and B diastereomers

pictograms

Exclamation mark

signalword

Warning

hcodes

Hazard Classifications

Acute Tox. 4 Oral

Storage Class

11 - Combustible Solids

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves


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Gagan Deep et al.
Cancer metastasis reviews, 29(3), 447-463 (2010-08-18)
Cancer is a major health problem around the world. Research efforts in the last few decades have been successful in providing better and effective treatments against both early stage and localized cancer, but clinical options against advanced metastatic stage/s of
Chiu-Mei Lin et al.
Journal of agricultural and food chemistry, 60(51), 12451-12457 (2012-12-06)
Silibinin is a flavonoid with antihepatotoxic properties and pleiotropic anticancer capabilities. This study investigated silibinin inhibition of cell invasion by down-regulating matrix metalloproteinase-2 (MMP-2) expression, via attenuation of activator protein-1 (AP-1) in IL-6-stimulated LoVo colon cancer cells. Western blot data
Katharina Esser-Nobis et al.
Hepatology (Baltimore, Md.), 57(3), 953-963 (2013-01-17)
Intravenous silibinin (SIL) is an approved therapeutic that has recently been applied to patients with chronic hepatitis C, successfully clearing hepatitis C virus (HCV) infection in some patients even in monotherapy. Previous studies suggested multiple antiviral mechanisms of SIL; however
A novel role of silibinin as a putative epigenetic modulator in human prostate carcinoma
Anestopoulos L, et al.
Molecules (Basel), 22(1), 62-62 (2017)
Lei Li et al.
Expert opinion on investigational drugs, 19(2), 243-255 (2010-01-06)
Due to the failure and severe toxicity of cancer chemotherapy, silibinin, a natural flavonoid from the seeds of milk thistle, has recently received more attention for its potential anticancer and nontoxic roles in animals and humans. Silibinin has clearly demonstrated

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