Abstract
Three chlorophyll a isomers (a₁, a₂ and a₃) were separated by the chromatography
of Chlorella extracts on paper 1. One of these, chlorophyll (a₃) showed additional
absorption bands at 688 and 455 mμ in diethyl ether. Chromatographic analysis could
not decide whether these bands were due to a₃ or to a minor compound
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