1050509-55-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1050509-55-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,5,0,5,0 and 9 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1050509-55:
(9*1)+(8*0)+(7*5)+(6*0)+(5*5)+(4*0)+(3*9)+(2*5)+(1*5)=111
111 % 10 = 1
So 1050509-55-1 is a valid CAS Registry Number.