Extended Data Fig. 2: 1H NMR spectra of conversion of α-anhydrouridine (15) from α-thiouridine (14).
From: Selective prebiotic formation of RNA pyrimidine and DNA purine nucleosides
a, 1H NMR spectrum of 15. b, 1H NMR spectrum of the reaction mixture after heating 14 in H2O. c, 1H NMR spectrum of the reaction mixture after heating 14 in formamide. f1, chemical shift (δ).
