Resveratrol (3,5,4′-trihydroxy-trans-stilbene) is a stilbenoid, a type of natural phenol, and a phytoalexin produced by several plants in response to injury or when the plant is under attack by pathogens, such as bacteria or fungi. Sources of resveratrol in food include the skin of grapes, blueberries, raspberries, mulberries, and peanuts.

Resveratrol

Chemical structures of cis- ((Z)-resveratrol, left) and trans-resveratrol ((E)-resveratrol, right)
Names
Preferred IUPAC name 5-[(E)-2-(4-Hydroxyphenyl)ethen-1-yl]benzene-1,3-diol
Other names trans-3,5,4′-Trihydroxystilbene; 3,4′,5-Stilbenetriol; trans-Resveratrol; (E)-5-(p-Hydroxystyryl)resorcinol; (E)-5-(4-hydroxystyryl)benzene-1,3-diol
Identifiers
CAS Number	501-36-0 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:45713 Y
ChEMBL	ChEMBL165 Y
ChemSpider	392875 Y
DrugBank	DB02709 Y
ECHA InfoCard	100.121.386
KEGG	C03582 Y
PubChem CID	445154
RTECS number	CZ8987000
UNII	Q369O8926L Y
CompTox Dashboard (EPA)	DTXSID4031980
InChI InChI=1S/C14H12O3/c15-12-5-3-10(4-6-12)1-2-11-7-13(16)9-14(17)8-11/h1-9,15-17H/b2-1+ Y Key: LUKBXSAWLPMMSZ-OWOJBTEDSA-N Y InChI=1/C14H12O3/c15- 12-5-3-10(4-6-12) 1-2-11-7-13(16)9- 14(17)8-11/h1-9,15- 17H/b2-1+
SMILES Oc1ccc(cc1)\C=C\c2cc(O)cc(O)c2
Properties
Chemical formula	C14H12O3
Molar mass	228.247 g·mol−1
Appearance	white powder with slight yellow cast
Melting point	261 to 263 °C (502 to 505 °F; 534 to 536 K)
Solubility in water	0.03 g/L
Solubility in DMSO	16 g/L
Solubility in ethanol	50 g/L
UV-vis (λmax)	304nm (trans-resveratrol, in water) 286nm (cis-resveratrol, in water)
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H319
Precautionary statements	P264, P280, P305+P351+P338, P337+P313
Lethal dose or concentration (LD, LC):
LD50 (median dose)	23.2 μM (5.29 g)
Safety data sheet (SDS)	Fisher Scientific Sigma Aldrich
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

UV visible spectrum of trans-resveratrol

Although commonly used as a dietary supplement and studied in laboratory models of human diseases, there is no high-quality evidence that resveratrol improves lifespan or has a substantial effect on any human disease.