1173687-78-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1173687-78-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,3,6,8 and 7 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1173687-78:
(9*1)+(8*1)+(7*7)+(6*3)+(5*6)+(4*8)+(3*7)+(2*7)+(1*8)=189
189 % 10 = 9
So 1173687-78-9 is a valid CAS Registry Number.