Alexander Killen Macbeth 1889–1957

Alexander Killen Macbeth (1889–1957) was an Irish-born organic chemist who became a major figure in Australian chemistry. He was appointed Angas Professor of Chemistry at the University of Adelaide in 1928. There, he rebuilt and modernised the Chemistry Department, helped establish the Johnson Chemical Laboratories, and played a central role in improving pharmacy education in South Australia.

Macbeth was a leader in applying ultraviolet spectroscopy to organic chemistry. During World War II, he led vital applied research efforts, including local production of pharmaceuticals such as sulfamerazine, phenacetin, and caffeine. He was elected a Fellow of the Australian Academy of Science in 1955.

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