280583-13-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 280583-13-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,0,5,8 and 3 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 280583-13:
(8*2)+(7*8)+(6*0)+(5*5)+(4*8)+(3*3)+(2*1)+(1*3)=143
143 % 10 = 3
So 280583-13-3 is a valid CAS Registry Number.