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540777-89-7

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540777-89-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 540777-89-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,4,0,7,7 and 7 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 540777-89:
(8*5)+(7*4)+(6*0)+(5*7)+(4*7)+(3*7)+(2*8)+(1*9)=177
177 % 10 = 7
So 540777-89-7 is a valid CAS Registry Number.

540777-89-7Downstream Products

540777-89-7Relevant articles and documents

Highly Fluorinated Trifluorovinyl Aryl Ether Monomers and Perfluorocyclobutane Aromatic Ether Polymers for Optical Waveguide Applications

Wong, Sharon,Ma, Hong,Jen, Alex K.-Y.,Barto, Rick,Frank, Curtis W.

, p. 8001 - 8007 (2003)

A series of novel trifunctional and tetrafunctional trifluorovinyl aryl ether monomers and perfluorocyclobutane (PCFB) aromatic ether polymers have been synthesized and characterized. These PFCB polymers exhibit desirable properties for low loss optical w

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