Red-shifted d-luciferin analogues and their bioluminescence characteristics
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d-Luciferin (d-LH2) is the most used substrate for beetle luciferases in various bioluminescence applications. Here, we successfully synthesized six d-LH2 analogues including 5',7'-dimethoxy-d-LH2 and 7'-methylnaphthol-d-LH2 as novel compounds. We also deve... ...