166318-57-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 166318-57-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,6,3,1 and 8 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 166318-57:
(8*1)+(7*6)+(6*6)+(5*3)+(4*1)+(3*8)+(2*5)+(1*7)=146
146 % 10 = 6
So 166318-57-6 is a valid CAS Registry Number.