219556-12-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 219556-12-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,5,5 and 6 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 219556-12:
(8*2)+(7*1)+(6*9)+(5*5)+(4*5)+(3*6)+(2*1)+(1*2)=144
144 % 10 = 4
So 219556-12-4 is a valid CAS Registry Number.