721415-74-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 721415-74-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,2,1,4,1 and 5 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 721415-74:
(8*7)+(7*2)+(6*1)+(5*4)+(4*1)+(3*5)+(2*7)+(1*4)=133
133 % 10 = 3
So 721415-74-3 is a valid CAS Registry Number.