854221-97-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 854221-97-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,4,2,2 and 1 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 854221-97:
(8*8)+(7*5)+(6*4)+(5*2)+(4*2)+(3*1)+(2*9)+(1*7)=169
169 % 10 = 9
So 854221-97-9 is a valid CAS Registry Number.