Defenuron

Last updated
Defenuron
Skeletal formula of defenuron Defenuron.svg
Skeletal formula of defenuron
Names
Preferred IUPAC name
1-methyl-3-phenylurea
Other names
  • N-methyl-N'-phenylurea
  • N-phenyl-N'-methylurea
  • Desfenuron
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.151.228 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 622-469-6
KEGG
PubChem CID
UNII
  • InChI=1S/C8H10N2O/c1-9-8(11)10-7-5-3-2-4-6-7/h2-6H,1H3,(H2,9,10,11)
    Key: SQBHGDSDVWCPHN-UHFFFAOYSA-N
  • CNC(=O)NC1=CC=CC=C1
Properties
C8H10N2O
Molar mass 150.181 g·mol−1
Hazards
GHS labelling:
GHS-pictogram-acid.svg GHS-pictogram-exclam.svg
Danger
H317, H318
P261, P264+P265, P272, P280, P302+P352, P305+P354+P338, P317, P321, P333+P317, P362+P364, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Defenuron is an obsolete herbicide. Its formula is C8H10N2O. [1] It is an urea herbicide and was once produced as a wettable powder to control undesirable grasses and broad-leaved plants in a variety of crops. [2] It enters plants via diffusion and moves through the xylem. [3] It is highly water-soluble, is of low toxicity to fish, and does not pose a significant health hazard to mammals [2] or to Japanese quail. [4]

References

  1. ↑ "1-Methyl-3-phenylurea". PubChem . National Center for Biotechnology Information . Retrieved May 19, 2025.
  2. 1 2 "Defenuron (Ref: IPO 4328)". Pesticide Properties Database. 18 May 2025. Retrieved 19 May 2025.
  3. ↑ Grimm, Eckhard; Neumann, Stefanie; Jacob, Friedrich (1985-01-01). "Transport of Xenobiotics in Higher Plants II. Absorption of Defenuron, Carboxyphenylmethylurea, and Maleic Hydrazide by Isolated Conducting Tissue of Cyclamen" . Biochemie und Physiologie der Pflanzen. 180 (5): 383–392. Bibcode:1985BioPP.180..383G. doi:10.1016/S0015-3796(85)80089-5. ISSN   0015-3796.
  4. ↑ Paulov, S. (1977). "[Effects of herbicides (Gramoxone and Defenuron) on the development and protein levels of quail (Coturix coturix japonica)]". Veterinarni Medicina (in Slovak). 22 (7): 413–419. ISSN   0375-8427. PMID   411224.
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