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Nikkomicins, a process for their preparation and their use as agents for combating pests

Image Number 6 for United States Patent #4315922.

Pesticidally active substantially pure nikkomicin fractions obtained from Streptomyces tendae Ettlinger et al Tu 901, the fractions being selected from the group consisting of ##STR1## a mixture of nikkomicin I and J, and a mixture of nikkomicin M and N.

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