71968-69-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71968-69-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,9,6 and 8 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 71968-69:
(7*7)+(6*1)+(5*9)+(4*6)+(3*8)+(2*6)+(1*9)=169
169 % 10 = 9
So 71968-69-9 is a valid CAS Registry Number.