157724-04-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157724-04-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,7,2 and 4 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 157724-04:
(8*1)+(7*5)+(6*7)+(5*7)+(4*2)+(3*4)+(2*0)+(1*4)=144
144 % 10 = 4
So 157724-04-4 is a valid CAS Registry Number.