431931-77-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 431931-77-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,1,9,3 and 1 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 431931-77:
(8*4)+(7*3)+(6*1)+(5*9)+(4*3)+(3*1)+(2*7)+(1*7)=140
140 % 10 = 0
So 431931-77-0 is a valid CAS Registry Number.