BHQ®-1 (Figure 1) stands for Black Hole Quencher 1 and it consists of a dark quencher, often used in dual-labelled probes. As dark quenchers, Black Hole Quenchers absorb energy without emitting fluorescence. They are in fact non-fluorescent chromophores.
![](https://www.metabion.com/uploads/3BHQ-1.PNG.pagespeed.ce.O2g8HccwzU.png)
Figure 1. Structure of 3'-BHQ®-1.
metabion offers BHQ®-1 in its DNA and RNA dual-labelled probes portfolio: