Rose Bengal sodium/酸性红94
Rose Bengal sodium is a crimson-coloured dye, and it is a synthetic fluorescein derivative with the principal component being 4,5,6,7-tetrachloro-2,4,5,7-tetraiodo fluorescein. Rose Bengal sodium has been widely used as an ophthalmic diagnostic agents, it can detect desiccated or damaged cells on the ocular surface. Rose Bengal sodium exhibits antiviral activities.