7205-49-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7205-49-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,2,0 and 5 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 7205-49:
(6*7)+(5*2)+(4*0)+(3*5)+(2*4)+(1*9)=84
84 % 10 = 4
So 7205-49-4 is a valid CAS Registry Number.