157431-25-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157431-25-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,4,3 and 1 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 157431-25:
(8*1)+(7*5)+(6*7)+(5*4)+(4*3)+(3*1)+(2*2)+(1*5)=129
129 % 10 = 9
So 157431-25-9 is a valid CAS Registry Number.