A new pigment antibiotic named chrothiomycin, which inhibits the growth of some Gram-positive bacteria and the enzymic activities of oxygenases involved in catecholamine biosynthesis in vitro, was isolated from fermentation broths of Streptomyces pluricolorescens. It is obtained as blackish purple crystals, C27H31-33O13NS.
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Ayukawa et al. (1969) studied this question.