20703-97-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20703-97-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,7,0 and 3 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 20703-97:
(7*2)+(6*0)+(5*7)+(4*0)+(3*3)+(2*9)+(1*7)=83
83 % 10 = 3
So 20703-97-3 is a valid CAS Registry Number.