31239-56-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31239-56-2 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 9 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 31239-56:
(7*3)+(6*1)+(5*2)+(4*3)+(3*9)+(2*5)+(1*6)=92
92 % 10 = 2
So 31239-56-2 is a valid CAS Registry Number.