31945-78-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31945-78-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,9,4 and 5 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 31945-78:
(7*3)+(6*1)+(5*9)+(4*4)+(3*5)+(2*7)+(1*8)=125
125 % 10 = 5
So 31945-78-5 is a valid CAS Registry Number.