ATTO MB2 (Figure 1) derives from of the dye Methylene Blue and it presents a moderate hydrophilicity. Atto MB2 represents an excellent alternative to Methylene Blue.
Figure 1. Structure of 5'-Atto MB2 (R = sequence).
metabion offers the Atto MB2 modification in its DNA and RNA portfolio (as a 5'-, 3'- or internal modification):