428-77-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 428-77-3 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,2 and 8 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 428-77:
(5*4)+(4*2)+(3*8)+(2*7)+(1*7)=73
73 % 10 = 3
So 428-77-3 is a valid CAS Registry Number.