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Larvicidal principles obtained from the methanol extract of Kaempferiae Rhizoma (rhizomes of Kaempferia galanga) were identified as ethyl cinnamate, ethyl p-methoxycinnamate, and p-methoxycinnamic acid. Cinnamic acid and some of its derivatives showed larvicidal activity.
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Kiuchi et al. (1988) studied this question.
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