A vast array of small, non-peptide, organic compounds that are biologically active. Products include receptor antagonists, molecular probes, metabolites, GPCR ligands, neurotransmitters, ion channel modulators, and signaling activators and inhibitors.
Polyanionic dye often used in combination with the cationic quencher DPX for membrane fusion or permeability assays, including complement-mediated immune lysis