31748-07-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31748-07-9 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 7 respectively.
Calculate Digit Verification of CAS Registry Number 31748-07:
(7*3)+(6*1)+(5*7)+(4*4)+(3*8)+(2*0)+(1*7)=109
109 % 10 = 9
So 31748-07-9 is a valid CAS Registry Number.