1116491-55-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1116491-55-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,1,6,4,9 and 1 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1116491-55:
(9*1)+(8*1)+(7*1)+(6*6)+(5*4)+(4*9)+(3*1)+(2*5)+(1*5)=134
134 % 10 = 4
So 1116491-55-4 is a valid CAS Registry Number.