Tian Q., Giusti M.M., Stoner G.D., Schwartz S.J. (2006) Urinary excretion of black raspberry (Rubus occidentalis) anthocyanins and their metabolites. J Agric Food Chem 54:1467-72 PubMed (16478275)

Compound Mean content
Cyanidin 3-O-glucoside 4.7 mg/g dry weight
Cyanidin 3-O-sambubioside 3 mg/g dry weight
Cyanidin 3-O-xylosyl-rutinoside 15.8 mg/g dry weight
Cyanidin 3-O-rutinoside 36.3 mg/g dry weight