550316-09-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 550316-09-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,5,0,3,1 and 6 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 550316-09:
(8*5)+(7*5)+(6*0)+(5*3)+(4*1)+(3*6)+(2*0)+(1*9)=121
121 % 10 = 1
So 550316-09-1 is a valid CAS Registry Number.