The molecular structure of serine. Serine (chemical name: 2-amino-1,3-propanediol) is a pharmaceutical intermediate used as a main raw material for the synthesis of iopamidol (medicine name iodine). Iopamidol is a non-ionic contrast agent. It is widely used in foreign developed countries as a diagnostic reagent for the blood system, lymphatic system, urinary system and neurological system.

Function:
In radiological examinations, in order to increase the contrast of a certain visceral tissue or lumen, and to clearly show the shape, contour and lesion characteristics of the organ or the lumen, it is often necessary to apply certain special substances. This substance is called Control medium. , commonly known as contrast agent, this operation is called angiography. It is called an enhancer in computed tomography and magnetic resonance imaging.