128043-98-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128043-98-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,0,4 and 3 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 128043-98:
(8*1)+(7*2)+(6*8)+(5*0)+(4*4)+(3*3)+(2*9)+(1*8)=121
121 % 10 = 1
So 128043-98-1 is a valid CAS Registry Number.