Synthesis and Spectral Study of New Guanine Derivative (N-((6-Oxo-6,9-Dihydro-1H-Purin-2-yl)Carbamothioyl)Propionamide) and its Complexes with Some Metals Ion. IHJPAS. 2024;37(2):283-296. doi:10.30526/37.2.3313