Electron density distribution in cladribine (2-chloro-2′-deoxyadenosine) - A drug against leukemia and multiple sclerosis - Studied by multinuclear NQR spectroscopy and DFT calculations

2-Chloro-2′-deoxyadenosine (Cladribine), chemotherapeutic, has been studied experimentally by 35Cl NQR and NMR-NQR and theoretically analysed within the DFT and AIM formalism.