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Merck
CN

1612630

USP

Silybin

United States Pharmacopeia (USP) Reference Standard

Synonym(s):

Silibinin, 2,3-Dihydro-3-(4-hydroxy-3-methoxyphenyl)-2-(hydroxymethyl)-6-(3,5,7-trihydroxy-4-oxobenzopyran-2-yl)benzodioxin, Silybin

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About This Item

Empirical Formula (Hill Notation):
C25H22O10
CAS Number:
22888-70-6
Molecular Weight:
482.44
NACRES:
NA.24
PubChem Substance ID:
329751097
UNSPSC Code:
41116107
MDL number:
MFCD03225424

Key Documents

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Product Name

Silybin, United States Pharmacopeia (USP) Reference Standard

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

SMILES string

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

InChI key

SEBFKMXJBCUCAI-ILJKEPSESA-N

grade

pharmaceutical primary standard

API family

silybin

manufacturer/tradename

USP

application(s)

pharmaceutical (small molecule)

format

neat

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Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Application

Silybin USP reference standard, intended for use in specified quality tests and assays as specified in the USP compendia.
Also, for use with USP monographs such as:
  • Powdered Milk Thistle Extract
  • Milk Thistle Capsules
  • Milk Thistle Tablets
  • Powdered Milk Thistle
  • Milk Thistle

General description

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.
For further information and support please go to the website of the issuing Pharmacopoeia.

Other Notes

Sales restrictions may apply.

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H302

Hazard Classifications

Acute Tox. 4 Oral

Storage Class

11 - Combustible Solids

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

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