13031-65-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13031-65-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,0,3 and 1 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 13031-65:
(7*1)+(6*3)+(5*0)+(4*3)+(3*1)+(2*6)+(1*5)=57
57 % 10 = 7
So 13031-65-7 is a valid CAS Registry Number.