219859-49-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 219859-49-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,8,5 and 9 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 219859-49:
(8*2)+(7*1)+(6*9)+(5*8)+(4*5)+(3*9)+(2*4)+(1*9)=181
181 % 10 = 1
So 219859-49-1 is a valid CAS Registry Number.