2251-23-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2251-23-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,2,5 and 1 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 2251-23:
(6*2)+(5*2)+(4*5)+(3*1)+(2*2)+(1*3)=52
52 % 10 = 2
So 2251-23-2 is a valid CAS Registry Number.