16820-14-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16820-14-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,8,2 and 0 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 16820-14:
(7*1)+(6*6)+(5*8)+(4*2)+(3*0)+(2*1)+(1*4)=97
97 % 10 = 7
So 16820-14-7 is a valid CAS Registry Number.