31231-45-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31231-45-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,2,3 and 1 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 31231-45:
(7*3)+(6*1)+(5*2)+(4*3)+(3*1)+(2*4)+(1*5)=65
65 % 10 = 5
So 31231-45-5 is a valid CAS Registry Number.