688741-11-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 688741-11-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,8,7,4 and 1 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 688741-11:
(8*6)+(7*8)+(6*8)+(5*7)+(4*4)+(3*1)+(2*1)+(1*1)=209
209 % 10 = 9
So 688741-11-9 is a valid CAS Registry Number.