681424-89-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 681424-89-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,1,4,2 and 4 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 681424-89:
(8*6)+(7*8)+(6*1)+(5*4)+(4*2)+(3*4)+(2*8)+(1*9)=175
175 % 10 = 5
So 681424-89-5 is a valid CAS Registry Number.