We observed that cis-resveratrol, THP, and resveratrone exhibit a reasonable absorption overlap with the absorption band of trans-resveratrol. Concerning the rates, the results showed that ISC is not competitive with fluorescence for transand cis-resveratrol since the latter occurs at least 1000 times faster. For THP, however, ISC competes with fluorescence and for resveratrone, ISC dominates.