71716-05-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71716-05-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,7,1 and 6 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 71716-05:
(7*7)+(6*1)+(5*7)+(4*1)+(3*6)+(2*0)+(1*5)=117
117 % 10 = 7
So 71716-05-7 is a valid CAS Registry Number.