31748-09-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31748-09-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,7,4 and 8 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 31748-09:
(7*3)+(6*1)+(5*7)+(4*4)+(3*8)+(2*0)+(1*9)=111
111 % 10 = 1
So 31748-09-1 is a valid CAS Registry Number.