57308-87-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57308-87-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,3,0 and 8 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 57308-87:
(7*5)+(6*7)+(5*3)+(4*0)+(3*8)+(2*8)+(1*7)=139
139 % 10 = 9
So 57308-87-9 is a valid CAS Registry Number.