The weaker inhibitors of GC included several modulators of ion channels such as quinoxaline derivatives DNQX (5) and DCQX (4), dimethyl-piperazinium- (6) and piperidinium- (8) containing compounds, as well as the muscle relaxant Gallamine triethiodide (3) [34]. nm and 440 nm, respectively (Fig. 1a). For resorufin, the crimson GC enzyme Continue Reading