304457-87-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 304457-87-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,4,4,5 and 7 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 304457-87:
(8*3)+(7*0)+(6*4)+(5*4)+(4*5)+(3*7)+(2*8)+(1*7)=132
132 % 10 = 2
So 304457-87-2 is a valid CAS Registry Number.