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557793-49-4

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557793-49-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 557793-49-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,5,7,7,9 and 3 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 557793-49:
(8*5)+(7*5)+(6*7)+(5*7)+(4*9)+(3*3)+(2*4)+(1*9)=214
214 % 10 = 4
So 557793-49-4 is a valid CAS Registry Number.

557793-49-4Downstream Products

557793-49-4Relevant academic research and scientific papers

Defining space around conducting polymers: Reversible protonic doping of a canopied polypyrrole

Lee, Dongwhan,Swager, Timothy M.

, p. 6870 - 6871 (2003)

A canopy-shaped pyrrole derivative 2 was prepared, in which a sterically demanding pendant group is juxtaposed to the pyrrole fragment to minimize interstrand π-π stacking interactions in the resulting polymer. Anodic polymerization of 2 afforded highly c

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