Frequently Asked Questions

Can a positive preliminary colour-reaction test alone confirm the presence of a specific...

Can a positive preliminary colour-reaction test alone confirm the presence of a specific compound? No — colour reactions confirm only the presence of a broad phytochemical class (for example, 'alkaloids present') and are subject to false positives from structurally unrelated interfering compounds; definitive identification always requires chromatographic and, ultimately, spectroscopic confirmation.

Why is dereplication considered good research practice rather than an optional shortcut? Isolating and fully characterising a compound that is already well described in the literature consumes substantial time and resources without generating genuinely new scientific knowledge; early dereplication allows a research programme to focus its isolation effort where it can make a real contribution.