219539-68-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 219539-68-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,5,3 and 9 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 219539-68:
(8*2)+(7*1)+(6*9)+(5*5)+(4*3)+(3*9)+(2*6)+(1*8)=161
161 % 10 = 1
So 219539-68-1 is a valid CAS Registry Number.