Metamitron
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| Preferred IUPAC name
4-amino-3-methyl-6-phenyl-1,2,4-triazin-5-one | |
| Other names
Metamiton
Methiamitron 4-Amino-3-methyl-6-phenyl-1,2,4-triazin-5-one 4-Amino-3-methyl-6-phenyl-1,2,4-triazin-5(4H)-one Goltix Herbrak | |
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| ECHA InfoCard | 100.050.301 |
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| Properties | |
| C10H10N4O | |
| Molar mass | 202.217 g·mol−1 |
| Appearance | Colorless-to-yellow crystals[1] |
| Density | 600 kg/m3 |
| Melting point | 167[1] °C (333 °F; 440 K) |
| 0.17% (20 °C)[1] | |
| Vapor pressure | 0.00000086 Pa (20 °C)[1] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Metamitron is an organic compound used as a selective pre- and post-emergence herbicide in sugar beets.[2][3] It is used in the European Union for weed suppression in sugar beets.[3] Metamitron is marketed under the trade name Goltix by ADAMA in Europe, the United Kingdom,[4] New Zealand, and South Africa.
Metamitron is a triazinone herbicide. It possesses a triazine ring like other organic compounds that use cyanuric chloride as a precursor. It is a modification of the chemical 1,2,4-triazin-5(4H)-one, with methyl, amino, and phenyl group substitutions at positions 3, 4, and 6.[1]
Metamitron is in the HRAC Mode of action Group 5.[5] It functions as an inhibitor of PSII by binding to serine 264 on the D1 protein.[6] Resistance to metamitron has been found in Chenopodium album growing as weeds among sugar beet fields in Belgium, caused by a mutation in serine 264.[2][6]
Metamitron has moderate acute oral and inhalation toxicity.[1]
See also
References
- ^ a b c d e f "Metamitron". pubchem.ncbi.nlm.nih.gov.
- ^ a b Mechant, Els (January 2011). Metamitron resistant Chenopodium album: characterisation, detection and distribution in Belgian sugar beet. Ghent, Belgium: Ghent University. p. 247. ISBN 978-90-5989-460-0. Retrieved 5 January 2024.
- ^ a b "Metamitron - an overview | ScienceDirect Topics". www.sciencedirect.com. Retrieved 5 January 2024.
- ^ "GOLTIX® 70 SC | ADAMA". www.adama.com. 4 October 2021. Retrieved 5 January 2024.
- ^ "Global Herbicide Classification Lookup". Herbicide Resistance Action Committee. Retrieved 5 January 2024.
- ^ a b Thiel, Heike; Kluth, Christian; Varrelmann, Mark (September 2010). "A new molecular method for the rapid detection of a metamitron-resistant target site in Chenopodium album". Pest Management Science. 66 (9): 1011–1017. doi:10.1002/ps.1975. PMID 20730994. Retrieved 6 January 2024.