Repin, a plant responsible for Parkinson-like disease in horses, is the principal sesquiterpene lactone extracted from Russian knapweed.

11024-67-2

C19H22O7

362.378

Repin

(< 1 mg/ml refers to the product slightly soluble or insoluble )
Powder: -20°C for 3 years
In solvent: -80°C for 2 years