2779-17-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2779-17-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,7,7 and 9 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 2779-17:
(6*2)+(5*7)+(4*7)+(3*9)+(2*1)+(1*7)=111
111 % 10 = 1
So 2779-17-1 is a valid CAS Registry Number.