1866-79-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1866-79-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,8,6 and 6 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1866-79:
(6*1)+(5*8)+(4*6)+(3*6)+(2*7)+(1*9)=111
111 % 10 = 1
So 1866-79-1 is a valid CAS Registry Number.