128683-28-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128683-28-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,6,8 and 3 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 128683-28:
(8*1)+(7*2)+(6*8)+(5*6)+(4*8)+(3*3)+(2*2)+(1*8)=153
153 % 10 = 3
So 128683-28-3 is a valid CAS Registry Number.