Astilbin

Astilbin is a flavonoid compound that can enhance NRF2 activition with anti-inflammatory properties. It could be extracted from chinese astilbe. Astilbin has been found to have significant immunosuppressive effects in recent years.

Product information

CAS Number: 29838-67-3

Molecular Weight: 450.39

Formula: C21H22O11

Synonym:

Isoastilbin

Neoastilbin

Neoisoastilbin

Taxifolin 3-O-rhamnoside

Taxifolin 3-rhamnoside

Chemical Name: (2R,3R)-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-(((2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)chroman-4-one

Smiles: C[C@@H]1O[C@@H](O[C@@H]2[C@H](OC3=CC(O)=CC(O)=C3C2=O)C2=CC(O)=C(O)C=C2)[C@H](O)[C@H](O)[C@H]1O

InChiKey: ZROGCCBNZBKLEL-MPRHSVQHSA-N

InChi: InChI=1S/C21H22O11/c1-7-15(26)17(28)18(29)21(30-7)32-20-16(27)14-12(25)5-9(22)6-13(14)31-19(20)8-2-3-10(23)11(24)4-8/h2-7,15,17-26,28-29H,1H3/t7-,15-,17+,18+,19+,20-,21-/m0/s1

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Solubility: DMSO : 100 mg/mL (222.03 mM; Need ultrasonic)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 ^oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 ^oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200

How to use

In Vitro:

In vitro, astilbin inhibits Th17 cell differentiation and IL-17 secretion of isolated T cells, and inhibits Jak/Stat3 signaling in Th17 cells, while up-regulating Stat3 inhibitor SCOSE3 expression in psoriatic lesions. Astilbin has been reported to possess multiple clinically relevant bioactivities, including antioxidant, anti-inflammatory, anti-arthritic, and anti-diabetic nephropathy properties. Nevertheless, the molecular mechanisms by which astilbin interacts with inflammatory processes are poorly understood. Astilbin not only inhibits T lymphocyte function in acute heart allograft rejection, but also inhibits migration and antigen presenting of dendritic cells (DCs)[1].

In Vivo:

Astilbin is reported to reduce activation of both T and B cells in lupus-prone mice. It significantly inhibits inflammatory responses and keratinocyte over-proliferation in a mouse model of imiquimod (IMQ)-induced psoriasis[1]. Astilbin undergoes extensive biotransformation specifically due to enzyme catechol-O-methyl transferase. It gives rise to 3′-O-methylastilbin, a major metabolite of astilbin, which plays important role against the inhibition activated T lymphocytes. The pharmacokinetic parameters of astilbin followed by intragastric administration astilbin (40 mg/kg): Cmax=37.7±14.7 ng/mL, Tmax=25.8±34.3 min, t1/2=161.6±44.1 min[2].

References:

1. Di TT, et al. Int Immunopharmacol. 2016, 32:32-38.
2. Piyush Mehta, et al. New Journal of Science. 2016.

Products are for research use only. Not for human use.