688342-68-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 688342-68-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,8,3,4 and 2 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 688342-68:
(8*6)+(7*8)+(6*8)+(5*3)+(4*4)+(3*2)+(2*6)+(1*8)=209
209 % 10 = 9
So 688342-68-9 is a valid CAS Registry Number.