1023-13-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1023-13-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,0,2 and 3 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1023-13:
(6*1)+(5*0)+(4*2)+(3*3)+(2*1)+(1*3)=28
28 % 10 = 8
So 1023-13-8 is a valid CAS Registry Number.