2,4,6,8-tetraphenyl-1,5(2,5)-dipyrrola-3(2,5)-selenophena-7(2,5)-thiophena-cyclooctaphane-1(2),4,6,7(8)-tetraene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 66951-07-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,9,5 and 1 respectively; the second part has 2 digits, 0 and 7 respectively. Calculate Digit Verification of CAS Registry Number 66951-07: (7*6)+(6*6)+(5*9)+(4*5)+(3*1)+(2*0)+(1*7)=153 153 % 10 = 3 So 66951-07-3 is a valid CAS Registry Number.