30431-03-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 30431-03-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,0,4,3 and 1 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 30431-03:
(7*3)+(6*0)+(5*4)+(4*3)+(3*1)+(2*0)+(1*3)=59
59 % 10 = 9
So 30431-03-9 is a valid CAS Registry Number.