72431-40-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72431-40-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,4,3 and 1 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 72431-40:
(7*7)+(6*2)+(5*4)+(4*3)+(3*1)+(2*4)+(1*0)=104
104 % 10 = 4
So 72431-40-4 is a valid CAS Registry Number.