166169-72-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 166169-72-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,6,1,6 and 9 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 166169-72:
(8*1)+(7*6)+(6*6)+(5*1)+(4*6)+(3*9)+(2*7)+(1*2)=158
158 % 10 = 8
So 166169-72-8 is a valid CAS Registry Number.