78166-97-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78166-97-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,1,6 and 6 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 78166-97:
(7*7)+(6*8)+(5*1)+(4*6)+(3*6)+(2*9)+(1*7)=169
169 % 10 = 9
So 78166-97-9 is a valid CAS Registry Number.