2205-05-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2205-05-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,2,0 and 5 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 2205-05:
(6*2)+(5*2)+(4*0)+(3*5)+(2*0)+(1*5)=42
42 % 10 = 2
So 2205-05-2 is a valid CAS Registry Number.