20868-18-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20868-18-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,8,6 and 8 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 20868-18:
(7*2)+(6*0)+(5*8)+(4*6)+(3*8)+(2*1)+(1*8)=112
112 % 10 = 2
So 20868-18-2 is a valid CAS Registry Number.