78031-87-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78031-87-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,0,3 and 1 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 78031-87:
(7*7)+(6*8)+(5*0)+(4*3)+(3*1)+(2*8)+(1*7)=135
135 % 10 = 5
So 78031-87-5 is a valid CAS Registry Number.