1178903-81-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1178903-81-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,8,9,0 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1178903-81:
(9*1)+(8*1)+(7*7)+(6*8)+(5*9)+(4*0)+(3*3)+(2*8)+(1*1)=185
185 % 10 = 5
So 1178903-81-5 is a valid CAS Registry Number.