20738-31-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20738-31-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,7,3 and 8 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 20738-31:
(7*2)+(6*0)+(5*7)+(4*3)+(3*8)+(2*3)+(1*1)=92
92 % 10 = 2
So 20738-31-2 is a valid CAS Registry Number.