👉 In chemistry and biology, an impregnant is a substance that binds to a target protein or enzyme. This binding can be by covalent (ionic), peptide-like or hydrophilic interactions. Impregnants are often used in drug delivery systems for their ability to bind to specific proteins or enzymes and deliver drugs directly into the cell. For example, in the context of chemotherapy, an impregnant is typically a small molecule that binds specifically to certain molecules on cancer cells, causing them to
