17659-71-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17659-71-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,6,5 and 9 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 17659-71:
(7*1)+(6*7)+(5*6)+(4*5)+(3*9)+(2*7)+(1*1)=141
141 % 10 = 1
So 17659-71-1 is a valid CAS Registry Number.