2,3,4,5,2',3',4',5'-octaphenyl-1H,1'H-1,1'-methanediyl-bis-phosphole 1,1'-dioxide is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 34673-83-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,4,6,7 and 3 respectively; the second part has 2 digits, 8 and 3 respectively. Calculate Digit Verification of CAS Registry Number 34673-83: (7*3)+(6*4)+(5*6)+(4*7)+(3*3)+(2*8)+(1*3)=131 131 % 10 = 1 So 34673-83-1 is a valid CAS Registry Number.