33304-87-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 33304-87-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,3,0 and 4 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 33304-87:
(7*3)+(6*3)+(5*3)+(4*0)+(3*4)+(2*8)+(1*7)=89
89 % 10 = 9
So 33304-87-9 is a valid CAS Registry Number.