Isosilybin - analytical standard, ≥98% , CAS No.72581-71-6

CAS: 72581-71-6 Cat. No.: I115859 Molecular Weight: 482.44 EC Number: 683-238-3
AVAILABLE TO ORDER
GRADE & PURITY Analytical standard ? Analytical standard — certified-purity material for quantitative calibration. Use to prepare calibration standards and validate analytical methods. ≥98%
Synonyms
(2R,3R)-3,5,7-trihydroxy-2-[2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2,3-dihydro-1,4-benzodioxin-6-yl]-2,3-dihydrochromen-4-one | s9250 | CCG-269565 | SCHEMBL4653986 | AKOS030573651 | BDBM50595721 | EX-A8002P | Z3247556409 | (2R,3R)-3,5,7-trihydrox
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
5mg
I115859-5mg
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$241.90
10mg
I115859-10mg
3
$371.90
20mg
I115859-20mg
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$739.90
50mg
I115859-50mg
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$1,351.90
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Why this grade

analytical standard, ≥98% Analytical standard for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Store at -20°C Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.

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Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

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Literature proof

Cited in 1 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
(2R, 3R)-3, 5, 7-trihydroxy-2-[2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2, 3-dihydro-1, 4-benzodioxin-6-yl]-2, 3-dihydrochromen-4-one | s9250 | CCG-269565 | SCHEMBL4653986 | AKOS030573651 | BDBM50595721 | EX-A8002P | Z3247556409 | (2R, 3R)-3, 5, 7-trihydrox
Specifications & Purity
analytical standard, ≥98%
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
This product requires cold chain shipping. Ground and other economy services are not available.
Grade
Analytical standard
Action Type
INHIBITOR
Purity
≥98%
Names and Identifiers
Canonical SmilesCOC1=C(C=CC(=C1)C2C(OC3=C(O2)C=CC(=C3)C4C(C(=O)C5=C(C=C(C=C5O4)O)O)O)CO)O
IUPAC Name(2R,3R)-3,5,7-trihydroxy-2-[2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2,3-dihydro-1,4-benzodioxin-6-yl]-2,3-dihydrochromen-4-one
InChIKeyFDQAOULAVFHKBX-DBMPWETRSA-N
INCHI1S/C25H22O10/c1-32-17-6-11(2-4-14(17)28)24-20(10-26)33-18-7-12(3-5-16(18)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
Isomeric SMILES COC1=C(C=CC(=C1)C2C(OC3=C(O2)C=CC(=C3)[C@@H]4[C@H](C(=O)C5=C(C=C(C=C5O4)O)O)O)CO)O
Molecular Weight 482.44
Reaxy-Rn 8952975
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=8952975&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

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📊 Datasheet

Quick-reference summary of product specifications and applications.

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🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassLignans, neolignans and related compounds
ClassFlavonolignans
SubclassNot available
Intermediate Tree Nodes Not available
Direct ParentFlavonolignans
Alternative Parents 3-hydroxyflavonoids  5-hydroxyflavonoids  7-hydroxyflavonoids  Flavanonols  Phenylbenzo-1,4-dioxanes  Chromones  Methoxyphenols  Benzo-1,4-dioxanes  Phenoxy compounds  Anisoles  Methoxybenzenes  Aryl alkyl ketones  1-hydroxy-2-unsubstituted benzenoids  1-hydroxy-4-unsubstituted benzenoids  Alkyl aryl ethers  Para dioxins  Vinylogous acids  Secondary alcohols  Oxacyclic compounds  Polyols  Organic oxides  Primary alcohols  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents Flavonolignan - Hydroxyflavonoid - 3-hydroxyflavonoid - Flavanonol - Flavanone - 7-hydroxyflavonoid - 5-hydroxyflavonoid - Flavan - Phenylbenzodioxane - 2-phenylbenzo-1,4-dioxane - Chromone - 1-benzopyran - Methoxyphenol - Benzopyran - Chromane - Benzodioxane - Benzo-1,4-dioxane - Phenoxy compound - Anisole - Methoxybenzene - Aryl alkyl ketone - Aryl ketone - Phenol ether - Alkyl aryl ether - 1-hydroxy-2-unsubstituted benzenoid - Phenol - 1-hydroxy-4-unsubstituted benzenoid - Benzenoid - Para-dioxin - Monocyclic benzene moiety - Vinylogous acid - Secondary alcohol - Ketone - Polyol - Organoheterocyclic compound - Ether - Oxacycle - Alcohol - Organooxygen compound - Organic oxygen compound - Organic oxide - Hydrocarbon derivative - Primary alcohol - Aromatic heteropolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as flavonolignans. These are non-conventional lignans that derived from flavonoids. They are characterized by a p-dioxin ring substituted at one carbon atom by a C3C6 (phenylpropan) group and fused to the B-ring of the 2-phenylchromene moiety.
External Descriptors polyphenol - monomethoxybenzene - flavonolignan
3D Structure
Interactive Chemical Structure Model





Associated Targets(non-human)
Mmp13 Matrix metalloproteinase 13 (19 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Mmp9 Matrix metalloproteinase 9 (38 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Mechanisms of Action
Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

1 results found

Lot NumberCertificate TypeDateItem
I2216220Certificate of AnalysisMar 10, 2026 I115859
Chemical and Physical Properties
Molecular Weight482.400 g/mol
XLogP32.400
Hydrogen Bond Donor Count5
Hydrogen Bond Acceptor Count10
Rotatable Bond Count4
Exact Mass482.121 Da
Monoisotopic Mass482.121 Da
Topological Polar Surface Area155.000 Ų
Heavy Atom Count35
Formal Charge0
Complexity750.000
Isotope Atom Count0
Defined Atom Stereocenter Count2
Undefined Atom Stereocenter Count2
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Citations of This Product
References
1. Yuanbin Li, Wu Yi, Haowei Chen, Bao Han, Bo Ruan, Zhong Xiaoyu, Li ShanShan, Yifan Chen, Tao Peng, Jiaheng Zhang, Fang Wang.  (2024)  Enhancement of silymarin solubility and bioactivities using betaine/ascorbyl glucoside DES.  NEW JOURNAL OF CHEMISTRY,      [PMID:] [10.1039/D4NJ03748K]
Solution Calculators
Reviews

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