721918-45-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 721918-45-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,2,1,9,1 and 8 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 721918-45:
(8*7)+(7*2)+(6*1)+(5*9)+(4*1)+(3*8)+(2*4)+(1*5)=162
162 % 10 = 2
So 721918-45-2 is a valid CAS Registry Number.