219806-99-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 219806-99-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,8,0 and 6 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 219806-99:
(8*2)+(7*1)+(6*9)+(5*8)+(4*0)+(3*6)+(2*9)+(1*9)=162
162 % 10 = 2
So 219806-99-2 is a valid CAS Registry Number.