77893-66-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77893-66-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,8,9 and 3 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 77893-66:
(7*7)+(6*7)+(5*8)+(4*9)+(3*3)+(2*6)+(1*6)=194
194 % 10 = 4
So 77893-66-4 is a valid CAS Registry Number.