KURARINONE

CAS NO.：34981-26-5
Empirical Formula: C26H30O6
Molecular Weight: 438.51
MDL number: MFCD03411889
EINECS: 233-305-4
SAFETY DATA SHEET (SDS)
Update Date: 2026-07-27 17:00:41

What is KURARINONE?

Definition

ChEBI: (2S)-(-)-kurarinone is a trihydroxyflavanone that is (2S)-flavanone substituted by hydroxy groups at positions 7, 2' and 4', a lavandulyl group at position 8 and a methoxy group at position 5. Isolated from the roots of Sophora flavescens, it exhibits cytotoxicity against human myeloid leukemia HL-60 cells. It has a role as a metabolite and an antineoplastic agent. It is a trihydroxyflavanone, a monomethoxyflavanone and a member of 4'-hydroxyflavanones. It is functionally related to a (2S)-flavanone.

Biological Activity

Kurarinone, a flavonoid isolated from Sophora flavescens, inhibits the pathogenesis of experimental autoimmune encephalomyelitis by inhibiting the differentiation of Th1 and Th17 cells.

Physiological effects

Kurarinon has an anti-endothelial cell proliferative activity, and it has a significant inhibitory effect on endothelial cell proliferation with a median inhibitory concentration (IC50) of 12ug/ml.

Properties of KURARINONE

Melting point:	117-119℃
Boiling point:	651.4±55.0 °C(Predicted)
Density	1?+-.0.06 g/cm3(Predicted)
solubility	Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc.
form	Powder
pka	7.49±0.40(Predicted)
color	Light yellow to yellow

Safety information for KURARINONE

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation
Precautionary Statement Codes	P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P332+P313:IF SKIN irritation occurs: Get medical advice/attention. P337+P313:IF eye irritation persists: Get medical advice/attention.