431984-61-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 431984-61-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,1,9,8 and 4 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 431984-61:
(8*4)+(7*3)+(6*1)+(5*9)+(4*8)+(3*4)+(2*6)+(1*1)=161
161 % 10 = 1
So 431984-61-1 is a valid CAS Registry Number.