Therefore and returning to the case of re-establish vs. reestablish, it comes down to a question of popular usage and somehow gauging if one spelling trumps the other. On ELU, we do this by comparing Google Ngrams.
Ketoprofen is a nonsteroidal anti-inflammatory drug. The chemical name for ketoprofen is 2-(3-benzoylphenyl)-propionic acid with the following structural formula: Its empirical formula is C16H14O3, with a molecular weight of 254.29.
Although its name does not suggest similarity with propionic acid derivatives (e.g. ketoprofen, flurbiprofen, naproxen, ibuprofen, carprofen etc.), ketorolac is an isostere of ketoprofen. More precisely, it is a dihydropyrrolizine carboxylic acid derivative structurally related to indomethacin.