Distribution of the principal cannabinoids within bars of compressed cannabis resin [An article from: Analytica Chimica Acta]

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Description:
Determination by gas chromatography-mass spectrometry, after extraction into hexane, of the relative amounts of the three most abundant cannabinoids, cannabidiol (CBD), @D^9-tetrahydrocannabinol (@D^9-THC) and cannabinol (CBN), and the six next most abundant compounds in cannabis resin all showed significant variations in their relative amounts with sampling position. Thus, data from a single sub-sample cannot be regarded as characteristic of a cannabis resin bar or without further evidence of coming from a particular resin bar or batch of bars. A cannabis resin bar stored under ambient conditions for 12months showed major loss of @D^9-THC and an increase in CBN content as well as variations in composition with sampling position.