2273-20-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2273-20-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,2,7 and 3 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 2273-20:
(6*2)+(5*2)+(4*7)+(3*3)+(2*2)+(1*0)=63
63 % 10 = 3
So 2273-20-3 is a valid CAS Registry Number.