3057-84-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3057-84-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,0,5 and 7 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 3057-84:
(6*3)+(5*0)+(4*5)+(3*7)+(2*8)+(1*4)=79
79 % 10 = 9
So 3057-84-9 is a valid CAS Registry Number.