Rhodamine X carboxylic acid 

Rox, also known as rhodamine 101, is the abbreviation of rhodamine x (or x-rhodamine). X in the name indicates that rhodamine amino group is replaced by cyclization. In the field of fluorescent dyes, Rox often refers to Rox derivatives with 5 / 6 carboxylic acid structure, which can be used for the activation and labeling of fluorescent dyes. Rox is a fluorescent dye commonly used in the laboratory. It has good fat solubility and poor water solubility. It is often used as a fluorescent reporter of biological probes that need to penetrate the membrane. The product is Rox carboxylic acid, and the functional groups are not activated. Therefore, the labeled dye will not react with any functional groups and is very stable in organic solvents or aqueous solvents.

msds of Rhodamine X carboxylic acid