431981-14-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 431981-14-5 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 1 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 431981-14:
(8*4)+(7*3)+(6*1)+(5*9)+(4*8)+(3*1)+(2*1)+(1*4)=145
145 % 10 = 5
So 431981-14-5 is a valid CAS Registry Number.