79663-87-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 79663-87-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,9,6,6 and 3 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 79663-87:
(7*7)+(6*9)+(5*6)+(4*6)+(3*3)+(2*8)+(1*7)=189
189 % 10 = 9
So 79663-87-9 is a valid CAS Registry Number.