Isorhapontigenin
Also known as: (E)-3'-Methoxystilbene-3,4',5-triol, (E)-3,4',5-Trihydroxy-3'-methoxystilbene, (E)-3-Methoxy-stilbene-4,3',5'-triol, 1,3-Benzenediol, 5-[(E)-2-(4-hydroxy-3-methoxyphenyl)ethenyl]-, 3,4',5-Trihydroxy-3'-methoxy-trans-stilbene, 4,3',5'-trihydroxy-3-methoxystilbene, 5-[(1E)-2-(4-Hydroxy-3-methoxyphenyl)ethenyl]-1,3-benzenediol, 5-[(E)-2-(4-Hydroxy-3-methoxyphenyl)ethenyl]-1,3-benzenediol, 5-[(E)-2-(4-Hydroxy-3-methoxyphenyl)vinyl]benzene-1,3-diol, 5-[(E)-2-(4-hydroxy-3-methoxyphenyl)ethenyl]benzene-1,3-diol, Isorhapontigenin
Isorhapontigenin (CAS 32507-66-7) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C15H14O4 and a molecular weight of 258.269 g/mol. Key properties include a melting point of 182 - 184ºC, a boiling point of 471.8±35.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 239.1±25.9 °C. It is classified under GHS with signal word Danger and hazard statements H315 — Causes skin irritation, H318 — Causes serious eye damage and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 32507-66-7
- Jingsj CID
- J-1981446-1
- Molecular Formula
- C15H14O4
- Molecular Weight
- 258.269 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 182 - 184ºC |
|---|---|
| Boiling Point | 471.8±35.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 239.1±25.9 °C |
| Exact Mass | 258.089203 |
| PSA | 69.92000 |
| LogP | 2.90 |
| Vapor Pressure | 0.0±1.2 mmHg at 25°C |
| Refractive Index | 1.722 |
| Storage Conditions | room temp |
| Additional Property | DMSO: soluble15mg/mL, clear |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H318 — Causes serious eye damage
- H335 — May cause respiratory irritation
Activity & Biological Data
| Additional Information | [1]. Yeo SCM, et al. Isorhapontigenin, a bioavailable dietary polyphenol, suppresses airway epithelial cell inflammation through a corticosteroid-independent mechanism. Br J Pharmacol. 2017 Jul;174(13):2043-2059. [2]. Liang Y, et al. SESN2/sestrin 2 induction-mediated autophagy and inhibitory effect of isorhapontigenin (ISO) on human bladder cancers. Autophagy. 2016 Aug 2;12(8):1229-39. [3]. Jiang G, et al. Isorhapontigenin (ISO) Inhibits Invasive Bladder Cancer Formation In Vivo and Human Bladder Cancer Invasion In Vitro by Targeting STAT1/FOXO1 Axis. Cancer Prev Res (Phila). 2016 Jul;9(7):567-80. |
|---|
Customs & Trade Information
| HS Code | 2909499000 |
|---|---|
| Summary | 2909499000. ether-alcohols and their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:9.0%. . MFN tariff:5.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Isorhapontigenin?
The CAS number of Isorhapontigenin is 32507-66-7.
What are the molecular formula and molecular weight of Isorhapontigenin?
Isorhapontigenin has molecular formula C15H14O4 and molecular weight 258.269 g/mol.
Is Isorhapontigenin hazardous?
Isorhapontigenin has GHS signal word Danger and hazard statements H315 — Causes skin irritation; H318 — Causes serious eye damage; H335 — May cause respiratory irritation.
What are the upstream and downstream products of Isorhapontigenin?
For Isorhapontigenin, Upstream Products: 3,5-Dibenzyloxybenzyl alcohol, Vanillin, 3,5-Dihydroxybenzyl alcohol; Downstream Products: (E)-3,3',4,5'-Tetramethoxystilbene.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Isorhapontigenin (CAS 32507-66-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1981446-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.