71668-79-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71668-79-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,6,6 and 8 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 71668-79:
(7*7)+(6*1)+(5*6)+(4*6)+(3*8)+(2*7)+(1*9)=156
156 % 10 = 6
So 71668-79-6 is a valid CAS Registry Number.