128198-67-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128198-67-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,1,9 and 8 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 128198-67:
(8*1)+(7*2)+(6*8)+(5*1)+(4*9)+(3*8)+(2*6)+(1*7)=154
154 % 10 = 4
So 128198-67-4 is a valid CAS Registry Number.