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CAS number 15893-52-4 N
PubChem 2358
ChemSpider 2268 N
Jmol-3D images Image 1
Molecular formula C9H9NO5
Molar mass 211.17 g mol−1
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

DIMBOA (2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one) is a naturally occurring hydroxamic acid, a benzoxazinoid. DIMBOA is a powerful antibiotic present in maize and related grasses, particularly wheat and serves as a natural defense against a wide range of pests including insects, pathogenic fungi and bacteria.

In maize DIMBOA functions as natural defense against European corn borer larvae and many other damaging pests.[1] The exact level of DIMBOA varies between individual plants but higher concentrations are typically found in young seedlings and the concentration decreases as the plant ages.[2]


  1. ^ G7113 European Corn Borer: A Multiple-Crop Pest in Missouri, MU Extension
  2. ^ Cambier, V; Hance, T; de Hoffmann, E (2000). "Variation of DIMBOA and related compounds content in relation to the age and plant organ in maize". Phytochemistry 53 (2): 223–229. doi:10.1016/S0031-9422(99)00498-7. PMID 10680175.