1178531-55-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1178531-55-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,8,5,3 and 1 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1178531-55:
(9*1)+(8*1)+(7*7)+(6*8)+(5*5)+(4*3)+(3*1)+(2*5)+(1*5)=169
169 % 10 = 9
So 1178531-55-9 is a valid CAS Registry Number.