288303-23-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 288303-23-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,8,3,0 and 3 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 288303-23:
(8*2)+(7*8)+(6*8)+(5*3)+(4*0)+(3*3)+(2*2)+(1*3)=151
151 % 10 = 1
So 288303-23-1 is a valid CAS Registry Number.