31509-01-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31509-01-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,5,0 and 9 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 31509-01:
(7*3)+(6*1)+(5*5)+(4*0)+(3*9)+(2*0)+(1*1)=80
80 % 10 = 0
So 31509-01-0 is a valid CAS Registry Number.