Azorubine is an artificial food colorant that is commonly used in the food industry to add a red color to various foods and beverages. It is also known by several synonyms such as carmoisine, E122, and Food Red 3. Carmoisine is derived from the French word "carmois," which means "crimson," and it is used widely in the UK and European food markets. E122 is the number assigned to the synthetic dye by the European Union. Food Red 3 is the term used by the US Food and Drug Administration (FDA) to identify Azorubine on food labels. These synonyms represent the same artificial food colorant and can be used interchangeably.