What is the chemical name of a drug that is not protected by a trademark called?

The correct answer is the generic name. The generic name of a drug is its official, non-proprietary name that is not protected by trademark rights. It is the name assigned to a drug that is based on its chemical structure or its active ingredient, differentiating it from other drugs. Generic names are universally recognized and provide a standardized way to identify medications, ensuring that healthcare professionals and patients can clearly communicate about the same substance.

In contrast, trade names, brand names, and other proprietary names are marketing terms created by pharmaceutical companies to promote their specific products. These names often differ from one manufacturer to another, which can lead to confusion. Therefore, understanding the distinction between generic names and these other terms is crucial for anyone involved in healthcare or medication management.