166807-77-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 166807-77-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,6,8,0 and 7 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 166807-77:
(8*1)+(7*6)+(6*6)+(5*8)+(4*0)+(3*7)+(2*7)+(1*7)=168
168 % 10 = 8
So 166807-77-8 is a valid CAS Registry Number.