221889-63-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221889-63-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,8,8 and 9 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 221889-63:
(8*2)+(7*2)+(6*1)+(5*8)+(4*8)+(3*9)+(2*6)+(1*3)=150
150 % 10 = 0
So 221889-63-0 is a valid CAS Registry Number.