The chemical compound "UO2(2+)*C18H19N3O2(2-) = UO2(C18H19N3O2)" represents a complex between uranium dioxide (UO22+) and a negatively charged organic ligand, C18H19N3O22-. This complex is formed through coordination, where the uranium dioxide ion acts as the central metal ion and the organic ligand coordinates to it, forming a stable complex. The organic ligand, with the formula C18H19N3O2, is likely a chelating agent, which can bind to the metal ion through multiple donor atoms, enhancing the stability of the complex. The overall charge of the complex is neutral, as the +2 charge of the uranium dioxide ion is balanced by the -2 charge of the ligand. This type of complex is important in various fields, including nuclear chemistry, where it can be used to study the behavior of uranium in different environments, and in the development of new materials with specific properties.
The CAS Registry Mumber 25618-60-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,6,1 and 8 respectively; the second part has 2 digits, 6 and 0 respectively. Calculate Digit Verification of CAS Registry Number 25618-60: (7*2)+(6*5)+(5*6)+(4*1)+(3*8)+(2*6)+(1*0)=114 114 % 10 = 4 So 25618-60-4 is a valid CAS Registry Number.