717889-13-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 717889-13-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,1,7,8,8 and 9 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 717889-13:
(8*7)+(7*1)+(6*7)+(5*8)+(4*8)+(3*9)+(2*1)+(1*3)=209
209 % 10 = 9
So 717889-13-9 is a valid CAS Registry Number.