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    Which solvents are best for terpene flash chromatography?

    July 6, 2022 at 2:59 PM / by Bob Bickler posted in UV, selectivity

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    Well, it’s spring as I write this, my favorite time of year, and the foliage is in various stages of bloom. I like the rebirth of nature and the floral aromas that emanate from the blooms. These botanical aromas are the result of the various terpenes and terpenoids in the plant which can be very different between species.

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    Which solvent is better for reversed-phase flash chromatography - methanol or acetonitrile?

    January 26, 2021 at 1:49 PM / by Bob Bickler posted in Chromatography Fundamentals, acetonitrile, methanol, selectivity

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    An interesting question for synthesis chemists as the need for reversed-phase flash chromatography for both intermediates and final compounds increases. Historically, normal-phase flash chromatography has been the “go-to” purification tool for synthetic intermediates. Today, however, intermediates and final products are increasingly polar. These polar reaction mixtures cause purification challenges in both separation and recovery with normal-phase (silica) thus requiring use of reversed-phase flash chromatography.

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