This is more of a meta-chemistry question, but, here goes...

Given the structure of a polymer, how can I search online for which polymer it is?

Specifically, I have an image like this:

enter image description here

I'd also like to know which polymer specifically this is, but also a method for figuring this out in the future by myself :)

  • 1
    $\begingroup$ A polymer is generally an organic compound with a base component of repeating units- generally 1000's of units such as CH2 for polyethylene. Nothing repeats in this compound so its not a polymer. An oligomer is like a polymer but has far smaller numbers of repeating units. A polymer as a material is a plastic- it have engineering value whereas an oligiomer behaves like a chemical. $\endgroup$ Commented Apr 29, 2014 at 9:44

1 Answer 1


That looks like bilirubin, from hemoglobin catabolized in the liver Monomer, dimer..tetramer...oligomer...polymer...high polymer. It is a tetrapyrrole, not even an oligomer.


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