Methiozolin (Ref: MRC-01) |
![]() Last updated: 04/01/2021 |
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(Also known as: metiozolin) |
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A novel herbicide for turf and particularly useful for control of annual bluegass (Poa annua). | |
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Annual bluegrass and other grass weeds | |
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Turf; Sports greens | |
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Current | |
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2008; 2010 first registered in Korea |
UK regulatory status |
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Not approved | ||
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Not applicable | ||
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No UK approval for use |
EC Regulation 1107/2009 (repealing 91/414) |
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Not applicable | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Also used in |
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Korea |
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Chemical structure |
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Methiozolin is a chiral molecule occurring in the R- and S-forms. Commercially it is sold as a an isomeric herbicide. | |
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C₁₇H₁₇F₂NO₂S | |
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CC1=C(SC=C1)C2=NOC(C2)(C)COCC3=C(C=CC=C3F)F | |
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No data | |
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OPEJGICLTMWFNQ-UHFFFAOYSA-N | |
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InChI=1S/C17H17F2NO2S/c1-11-6-7-23-16(11)15-8-17(2,22-20-15)10-21-9-12-13(18)4-3-5-14(12)19/h3-7H,8-10H2,1-2H3 | |
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Yes |
General status |
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Herbicide | |
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Isoxazoline | |
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Synthetic | |
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Root uptake, slow acting, strongly inhibits plant cell wall biosynthesis in susceptible grasses | |
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403640-27-7 | |
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11500973 | |
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337.38 | |
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rac-(5R)-5-{[(2,6-difluorophenyl)methoxy]methyl}-5-methyl-3-(3-methylthiophen-2-yl)-4,5-dihydro-1,2-oxazole | |
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(5RS)-5-[(2,6-difluorobenzyloxy)methyl]-4,5-dihydro-5-methyl-3-(3-methyl-2-thienyl)-1,2-oxazole | |
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5-[[(2,6-difluorophenyl)methoxy]methyl]-4,5-dihydro-5-methyl-3-(3-methyl-2-thienyl)isoxazole | |
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Q | |
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30 | |
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Not applicable | |
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Not applicable | |
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None identified | |
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Formulations |
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Usually supplied as an emulsifiable concentrate |
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3.4 | R4 R = Peer reviewed scientific publications 4 = Verified data |
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1000 | R4 R = Peer reviewed scientific publications Acetone4 = Verified data |
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560 | R4 R = Peer reviewed scientific publications Methanol4 = Verified data |
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26 | R4 R = Peer reviewed scientific publications Hexane4 = Verified data |
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50.2 | R4 R = Peer reviewed scientific publications 4 = Verified data |
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402.7 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) 3 = Unverified data of known source |
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197.4 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) 3 = Unverified data of known source |
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Degradation |
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49 | R4 R = Peer reviewed scientific publications 4 = Verified data |
Moderately persistent | ||||||||
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DT₅₀ range 46.8 to 51.7 days | ||||||||||
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Soil adsorption and mobility |
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Fate indices |
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> 2500 | R4 R = Peer reviewed scientific publications Rat4 = Verified data |
Low | ||||||||
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1.53 | R4 R = Peer reviewed scientific publications Oncorhynchus mykiss4 = Verified data |
Moderate | ||||||||
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2.04 | R4 R = Peer reviewed scientific publications Daphnia magna4 = Verified data |
Moderate | ||||||||
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2.88 | R4 R = Peer reviewed scientific publications Selenastrum capricornutum4 = Verified data |
Moderate | ||||||||
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> 100 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) 4 = Verified data |
Low | |||||||
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> 1000 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Eisenia foetida4 = Verified data |
Low | ||||||||
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General |
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High (class III) | - | - | ||||||||
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> 2500 | R4 R = Peer reviewed scientific publications Rat4 = Verified data |
Low | ||||||||
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2500 | R4 R = Peer reviewed scientific publications Rat4 = Verified data |
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Health issues |
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No further information available |
Handling issues |
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No information available | |||
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NL (Not listed) | |||
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methiozolin | ||
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Record last updated: | 04/01/2021 |
Contact: | aeru@herts.ac.uk |
Please cite as: | Lewis, K.A., Tzilivakis, J., Warner, D. and Green, A. (2016) An international database for pesticide risk assessments and management. Human and Ecological Risk Assessment: An International Journal, 22(4), 1050-1064. DOI: 10.1080/10807039.2015.1133242 |