karboksyylijohdannaiset

Could you clarify the term "Karboksyylijoh..."? It doesn’t appear to match a standard chemical term as written. Do you mean a real concept such as the carboxyl group (karboksüülrühm), carboxylic acids, or carboxylates? Or would you like a neutral wiki-style article about a fictional or placeholder term? If you’re open to it, I can also proceed with a concise article on the carboxyl group (a widely used topic in organic chemistry) in the same neutral, informative style. Please specify your preference.