6-Bromo-2-naphthol is an RTP (real-time polymerase chain reaction) probe capable of real-time monitoring of PCR reactions and quantification of specific nucleic acid sequences. 6-Bromo-2-naphthol phosphoresces at room temperature. RTP probes are a type of small DNA or RNA sequence labeled with fluorescent dyes and quencher molecules and can be widely used for gene expression analysis, SNP genotyping and pathogen detection^[1].