89901-20-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89901-20-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,9,0 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 89901-20:
(7*8)+(6*9)+(5*9)+(4*0)+(3*1)+(2*2)+(1*0)=162
162 % 10 = 2
So 89901-20-2 is a valid CAS Registry Number.