72166-79-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72166-79-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,1,6 and 6 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 72166-79:
(7*7)+(6*2)+(5*1)+(4*6)+(3*6)+(2*7)+(1*9)=131
131 % 10 = 1
So 72166-79-1 is a valid CAS Registry Number.