219589-87-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 219589-87-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,5,8 and 9 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 219589-87:
(8*2)+(7*1)+(6*9)+(5*5)+(4*8)+(3*9)+(2*8)+(1*7)=184
184 % 10 = 4
So 219589-87-4 is a valid CAS Registry Number.