17689-64-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17689-64-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,6,8 and 9 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 17689-64:
(7*1)+(6*7)+(5*6)+(4*8)+(3*9)+(2*6)+(1*4)=154
154 % 10 = 4
So 17689-64-4 is a valid CAS Registry Number.