178809-05-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 178809-05-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,8,8,0 and 9 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 178809-05:
(8*1)+(7*7)+(6*8)+(5*8)+(4*0)+(3*9)+(2*0)+(1*5)=177
177 % 10 = 7
So 178809-05-7 is a valid CAS Registry Number.