Okay, kiddo, so have you ever played with those Lego blocks? Imagine you have a big Lego block and you want to stick some smaller Lego pieces on it to make it cooler and more powerful. That's kind of like what scientists do with small molecule drug conjugates.
You see, small molecules are like tiny Lego pieces that can move around inside your body and do cool things. And scientists figured out that they can attach these small molecules to bigger molecules, like proteins, to make them work better.
When they do this, they call it a small molecule drug conjugate. It's like a powerful superhero that has special abilities because of the small molecules attached to it. These superheroes can go inside your body and fight bad guys, like cancer cells, to make you healthier.
Just like how different Lego pieces can make a Lego creation look and do different things, different small molecule drug conjugates can have different abilities to fight different diseases. That's why scientists are always working to create new and better small molecule drug conjugates to help people feel better.