20896-21-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20896-21-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,8,9 and 6 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 20896-21:
(7*2)+(6*0)+(5*8)+(4*9)+(3*6)+(2*2)+(1*1)=113
113 % 10 = 3
So 20896-21-3 is a valid CAS Registry Number.