Lambertianin C is an ellagitannin.
Lambertianin C can be found in Rubus species such as Rubus lambertianus,[2] in cloudberries (Rubus chamaemorus)[3] and in red raspberries (Rubus idaeus).
[4] Lambertianin C is trimer of casuarictin linked by sanguisorbic acid ester groups between glucopyranose moieties.
[2] It contributes to the in vitro antioxidant activity of raspberries.
[5]