Donovan J.L., Bell J.R., Kasim-Karakas S., German J.B., Walzem R.L., Hansen R.J., Waterhouse A.L. (1999) Catechin is present as metabolites in human plasma after consumption of red wine. J Nutr 129:1662-8 PubMed (15788107)

Compound Mean content
(+)-Catechin 34 mg/120 mL
Flavanols, total 51 mg/120 mL
Hydroxycinnamic acids, total 4 mg/120 mL
Flavonols, total 12 mg/120 mL
Anthocyanins, total 34 mg/120 mL
Hydroxybenzoic acids, total 2 mg/120 mL