218441-73-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 218441-73-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,8,4,4 and 1 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 218441-73:
(8*2)+(7*1)+(6*8)+(5*4)+(4*4)+(3*1)+(2*7)+(1*3)=127
127 % 10 = 7
So 218441-73-7 is a valid CAS Registry Number.