71616-99-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71616-99-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,6,1 and 6 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 71616-99:
(7*7)+(6*1)+(5*6)+(4*1)+(3*6)+(2*9)+(1*9)=134
134 % 10 = 4
So 71616-99-4 is a valid CAS Registry Number.