721401-09-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 721401-09-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,2,1,4,0 and 1 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 721401-09:
(8*7)+(7*2)+(6*1)+(5*4)+(4*0)+(3*1)+(2*0)+(1*9)=108
108 % 10 = 8
So 721401-09-8 is a valid CAS Registry Number.