2123-72-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2123-72-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,2 and 3 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 2123-72:
(6*2)+(5*1)+(4*2)+(3*3)+(2*7)+(1*2)=50
50 % 10 = 0
So 2123-72-0 is a valid CAS Registry Number.