(2(3,3',5,5'-tetra-tert-butyl-1,1'-biphenyl-2,2'-diylphosphite),2'(bis(4-Cl-phenyl)phosphite)-3,3,5',5'-tetra-tert-butyl-1,1'-biphenyl) is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 166603-67-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,6,6,0 and 3 respectively; the second part has 2 digits, 6 and 7 respectively. Calculate Digit Verification of CAS Registry Number 166603-67: (8*1)+(7*6)+(6*6)+(5*6)+(4*0)+(3*3)+(2*6)+(1*7)=144 144 % 10 = 4 So 166603-67-4 is a valid CAS Registry Number.
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