1,1-bis-(4-iodo-phenyl)-ethane, also known as 4,4'-diiodobiphenyl, is an organic compound characterized by its molecular formula C14H10I2. This chemical features a central ethane molecule with two phenyl rings attached to the terminal carbon atoms, each substituted with an iodine atom at the para position. The presence of iodine atoms in 1,1-bis-(4-iodo-phenyl)-ethane makes it a valuable intermediate in the synthesis of various pharmaceuticals, agrochemicals, and other specialty chemicals. Due to its unique structure, 1,1-bis-(4-iodo-phenyl)-ethane exhibits interesting properties, such as its ability to participate in various chemical reactions, including coupling reactions, which are crucial in the formation of more complex molecules.
The CAS Registry Mumber 5216-55-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,2,1 and 6 respectively; the second part has 2 digits, 5 and 5 respectively. Calculate Digit Verification of CAS Registry Number 5216-55: (6*5)+(5*2)+(4*1)+(3*6)+(2*5)+(1*5)=77 77 % 10 = 7 So 5216-55-7 is a valid CAS Registry Number.