Answers are grounded in this paper and cite their sources.
Single-crystal x-ray diffraction methods have been used to directly observe and simultaneously determine the molecular structure of the UVA induced cis-syn photocycloaddition product in a partially photolyzed single crystal of a psoralen(pyrone ring side)-DNA(thymine) interaction model compound, 1'-(8-oxypsoralen)-8'(thym-1"yl)3',6'-dioxaoctane.
No takes yet. Share an insight, caveat, or question.
Pfluger et al. (1989) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: