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ChemicalBook >> CAS DataBase List >>(2R,3R)-3,5,7-Trihydroxy-2-[(2S,3S)-2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2,3-dihydrobenzo[1,4]dioxin-6-yl]-4-chromanone

(2R,3R)-3,5,7-Trihydroxy-2-[(2S,3S)-2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2,3-dihydrobenzo[1,4]dioxin-6-yl]-4-chromanone

(2R,3R)-3,5,7-Trihydroxy-2-[(2S,3S)-2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2,3-dihydrobenzo[1,4]dioxin-6-yl]-4-chromanone Structure
(2R,3R)-3,5,7-Trihydroxy-2-[(2S,3S)-2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2,3-dihydrobenzo[1,4]dioxin-6-yl]-4-chromanone structure
CAS No.
142796-22-3
Chemical Name:
(2R,3R)-3,5,7-Trihydroxy-2-[(2S,3S)-2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2,3-dihydrobenzo[1,4]dioxin-6-yl]-4-chromanone
Synonyms
Isosilybin B;Isosilybin B-RM;Isosilybin B，ISB-B;Silybin Impurity 4;Isosilybin B, 10 mM in DMSO;Isosilybin B/(-)-Isosilybin B,Silybin a2;Isosilybin BQ: What is Isosilybin B Q: What is the CAS Number of Isosilybin B;(2R,3R)-3,5,7-Trihydroxy-2-[(2S,3S)-2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2,3-dihydrobenzo[1,4]dioxin-6-yl]-4-chromanone;(2R,3R)-3,5,7-Trihydroxy-2-((2S,3S)-2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2,3-dihydrobenzo[b][1,4]dioxin-6-yl)chroman-4-one;4H-1-Benzopyran-4-one, 2-[(2S,3S)-2,3-dihydro-2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-1,4-benzodioxin-6-yl]-2,3-dihydro-3,5,7-trihydroxy-, (2R,3R)-
CBNumber:
CB02755841
Molecular Formula:
C25H22O10
Molecular Weight:
482.44
MDL Number:
MFCD18783097
MOL File:
142796-22-3.mol
MSDS File:
SDS
Last updated:2026-07-27 17:00:41
Product description Number Pack Size Price
Isosilybin B analytical standard 95684 5mg $964
Isosilybin B SFA79622 5mg $980.6
Isosilybin B SFA79622 10mg $1364.3
Isosilybin B SFA79622 25mg $2558
Isosilybin B SFA79622 50mg $4093
Request For Quotation

(2R,3R)-3,5,7-Trihydroxy-2-[(2S,3S)-2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2,3-dihydrobenzo[1,4]dioxin-6-yl]-4-chromanone Properties

Melting point 194-196 °C(Solv: methanol (67-56-1))
Boiling point 793.0±60.0 °C(Predicted)
Density 1.527±0.06 g/cm3(Predicted)
storage temp. 2-8°C
solubility Soluble in DMSO
form Solid
pka 7.39±0.60(Predicted)
color White to off-white
InChIKey FDQAOULAVFHKBX-WAABAYLZSA-N
SMILES [C@H]1(C2=CC=C3O[C@@H](C4=CC=C(O)C(OC)=C4)[C@H](CO)OC3=C2)OC2=CC(O)=CC(O)=C2C(=O)[C@@H]1O
FDA UNII 15EH97604R
UNSPSC Code 41116107
NACRES NA.24

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H302
Precautionary statements  P264-P270-P301+P312-P501
WGK Germany  3
Storage Class 11 - Combustible Solids
Hazard Classifications Acute Tox. 4 Oral

(2R,3R)-3,5,7-Trihydroxy-2-[(2S,3S)-2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2,3-dihydrobenzo[1,4]dioxin-6-yl]-4-chromanone price More Price(20)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 95684 Isosilybin B analytical standard 142796-22-3 5mg $964 2022-05-15 Buy
Biosynth SFA79622 Isosilybin B 142796-22-3 5mg $980.6 2026-06-05 Buy
Biosynth SFA79622 Isosilybin B 142796-22-3 10mg $1364.3 2026-06-05 Buy
Biosynth SFA79622 Isosilybin B 142796-22-3 25mg $2558 2026-06-05 Buy
Biosynth SFA79622 Isosilybin B 142796-22-3 50mg $4093 2026-06-05 Buy
Product number Packaging Price Buy
95684 5mg $964 Buy
SFA79622 5mg $980.6 Buy
SFA79622 10mg $1364.3 Buy
SFA79622 25mg $2558 Buy
SFA79622 50mg $4093 Buy

(2R,3R)-3,5,7-Trihydroxy-2-[(2S,3S)-2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2,3-dihydrobenzo[1,4]dioxin-6-yl]-4-chromanone Chemical Properties,Uses,Production

Uses

Isosilybin B is one of the flavonolignans extracted from the seeds of milk thistle. Isosilybin B was the most consistently potent suppressor of cell growth. Isosilybin A (I901002) and isosilybin B were also the most effective suppressors of prostate-specific antigen secretion by androgen-dependent LNCaP cells.

(2R,3R)-3,5,7-Trihydroxy-2-[(2S,3S)-2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2,3-dihydrobenzo[1,4]dioxin-6-yl]-4-chromanone Preparation Products And Raw materials

Raw materials

Preparation Products

(2R,3R)-3,5,7-Trihydroxy-2-[(2S,3S)-2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2,3-dihydrobenzo[1,4]dioxin-6-yl]-4-chromanone Suppliers

Global( 90)Suppliers
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Chengdu Biopurify Phytochemicals Ltd. 		+86-28-82633860; +86-18080483897 sales@biopurify.com China 4616 58
Wuhan ChemNorm Biotech Co.,Ltd. 		+86-27-8439 4403 18971486879 sales@chemnorm.com CHINA 2934 58
TargetMol Chemicals Inc. 		+1-781-999-5354; +1-00000000000 marketing@targetmol.com United States 32431 58
BOC Sciences 		16314854226; +8616314854226 inquiry@bocsci.com United States 19852 58
Shaanxi Cuikang Pharmaceutical Technology Co., Ltd 		+86-19891622721 gao490372054@gamil.com China 1243 58
Hangzhou MolCore BioPharmatech Co.,Ltd. 		+86-057181025280; +8617767106207 sales@molcore.com China 49709 58
TargetMol Chemicals Inc. 		+1-781-999-5354; support@targetmol.com United States 38999 58
ShenZhen Trendseen Biological Technology Co.,Ltd. 		13417589054 trendseenbio@gmail.com China 11674 58
HANGZHOU LEAP CHEM CO., LTD. 		+86-571-87711850 +86-15355479329 market18@leapchem.com China 43303 58
Shanghai Acmec Biochemical Technology Co., Ltd. 		+86-18621343501 product@acmec-e.com China 33301 58
Supplier Advantage
Chengdu Biopurify Phytochemicals Ltd. 		58
Wuhan ChemNorm Biotech Co.,Ltd. 		58
TargetMol Chemicals Inc. 		58
BOC Sciences 		58
Shaanxi Cuikang Pharmaceutical Technology Co., Ltd 		58
Hangzhou MolCore BioPharmatech Co.,Ltd. 		58
TargetMol Chemicals Inc. 		58
ShenZhen Trendseen Biological Technology Co.,Ltd. 		58
HANGZHOU LEAP CHEM CO., LTD. 		58
Shanghai Acmec Biochemical Technology Co., Ltd. 		58

View Lastest Price from (2R,3R)-3,5,7-Trihydroxy-2-[(2S,3S)-2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2,3-dihydrobenzo[1,4]dioxin-6-yl]-4-chromanone manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Isosilybin B pictures 2026-07-27 Isosilybin B
142796-22-3
 $189.00-579.00 99.96% 10g TargetMol Chemicals Inc.
  • Isosilybin B pictures
  • Isosilybin B
    142796-22-3
  • $189.00-579.00
  • 99.96%
  • TargetMol Chemicals Inc.

(2R,3R)-3,5,7-Trihydroxy-2-[(2S,3S)-2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2,3-dihydrobenzo[1,4]dioxin-6-yl]-4-chromanone Spectrum

(2R,3R)-3,5,7-Trihydroxy-2-[(2S,3S)-2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2,3-dihydrobenzo[1,4]dioxin-6-yl]-4-chromanone(142796-22-3)1HNMR

142796-22-3((2R,3R)-3,5,7-Trihydroxy-2-[(2S,3S)-2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2,3-dihydrobenzo[1,4]dioxin-6-yl]-4-chromanone)Related Search:

Isosilybin Butyl stearate Bromothymol Blue CPNQ Isosilybin A
Sepil

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(2R,3R)-3,5,7-Trihydroxy-2-[(2S,3S)-2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2,3-dihydrobenzo[1,4]dioxin-6-yl]-4-chromanone 4H-1-Benzopyran-4-one, 2-[(2S,3S)-2,3-dihydro-2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-1,4-benzodioxin-6-yl]-2,3-dihydro-3,5,7-trihydroxy-, (2R,3R)- Isosilybin B，ISB-B Isosilybin B/(-)-Isosilybin B,Silybin a2 Isosilybin BQ: What is Isosilybin B Q: What is the CAS Number of Isosilybin B Isosilybin B-RM Silybin Impurity 4 Isosilybin B, 10 mM in DMSO (2R,3R)-3,5,7-Trihydroxy-2-((2S,3S)-2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-2,3-dihydrobenzo[b][1,4]dioxin-6-yl)chroman-4-one Isosilybin B 142796-22-3