721395-13-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 721395-13-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,2,1,3,9 and 5 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 721395-13:
(8*7)+(7*2)+(6*1)+(5*3)+(4*9)+(3*5)+(2*1)+(1*3)=147
147 % 10 = 7
So 721395-13-7 is a valid CAS Registry Number.