74973-57-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74973-57-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,9,7 and 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 74973-57:
(7*7)+(6*4)+(5*9)+(4*7)+(3*3)+(2*5)+(1*7)=172
172 % 10 = 2
So 74973-57-2 is a valid CAS Registry Number.