1-Butanesulfonic acid, 1,1,2,2,3,3,4,4,4-nonafluoro-,
[4,4'-biphenanthrene]-3,3'-diyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 873895-49-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,3,8,9 and 5 respectively; the second part has 2 digits, 4 and 9 respectively. Calculate Digit Verification of CAS Registry Number 873895-49: (8*8)+(7*7)+(6*3)+(5*8)+(4*9)+(3*5)+(2*4)+(1*9)=239 239 % 10 = 9 So 873895-49-9 is a valid CAS Registry Number.