Fig. 5From: Spectroscopic details on the molecular structure of pyrimidine‑2‑thiones heterocyclic compounds: computational and antiviral activity against the main protease enzyme of SARS-CoV-21H-NMR and 13C-NMR spectra of compounds L1, L2, L3, L4 and L5 using GIAO method on the optimized heterocyclic structuresBack to article page