INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
select
select
Auxin Mimics - GROUP 4 (Legacy HRAC Group O)
 ActiveCompanyExample Trade Name   

Arylpicolinate
 Arylpicolinateflorpyrauxifen368  OAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure

Benzoic acids
 Benzoic acidschloramben225Bayer Crop Science (ex Aventis)Amiben, ACP M-629OAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure
 Benzoic acidsdicamba226BASFBanvel, Clarity, VEL-58-CS-11OAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure
 Benzoic acidsTBA258  OAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure

Others
 Othersbenazolin-ethyl280  OAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure

Phenoxy-carboxylic-acids
 Phenoxy-carboxylic-acids2,4,5-T228Bayer Crop Science (ex Aventis)Weedar, WeedoneOAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure
 Phenoxy-carboxylic-acids2,4-D232Bayer Crop Science (ex Aventis)Weedar, WeedoneOAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure
 Phenoxy-carboxylic-acids2,4-DB233Bayer Crop Science (ex Aventis)Butyrol, ButoxoneOAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure
 Phenoxy-carboxylic-acidsclomeprop14Mitsubishi ChemicalYukahope, MY-15OAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure
 Phenoxy-carboxylic-acidsdichlorprop234Bayer Crop Science (ex Aventis)Desormone, Redipon, 2,4-DP, RD 406OAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure
 Phenoxy-carboxylic-acidsdichlorprop-P230BASFDuplosan DP, BAS 04418OAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure
 Phenoxy-carboxylic-acidsfenoprop1384  OAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure
 Phenoxy-carboxylic-acidsMCPA227Syngenta (ex Zen.)AgroxoneOAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure
 Phenoxy-carboxylic-acidsMCPA-thioethyl229HokkoHerbit, Hok-7501OAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure
 Phenoxy-carboxylic-acidsMCPB235Bayer Crop Science (ex Aventis)Legumex, Thistrol, MB 3046OAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure
 Phenoxy-carboxylic-acidsmecoprop236Bayer Crop Science (ex Aventis)Mecopex, MCPP, RD 4593OAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure
 Phenoxy-carboxylic-acidsmecoprop-P231BASFDuplosan KV, BAS 03729HOAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure

Pyridine carboxylic acids
 Pyridine carboxylic acidsaminopyralid328Dow AgroSciencesMilestoneOAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure
 Pyridine carboxylic acidsclopyralid237Dow AgroSciencesLontrel, Stinger, Reclaim, DOWCO-290OAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure
 Pyridine carboxylic acidsfluroxypyr238Dow AgroSciencesStarane, Advance, DOWCO 433OAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure
 Pyridine carboxylic acidshalauxifen330Dow AgroSciencesArylexOAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure
 Pyridine carboxylic acidspicloram239Dow AgroSciencesTordon, GrazonOAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure
 Pyridine carboxylic acidstriclopyr240Dow AgroSciencesGarlon, Grandstand, DOWCO-233OAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure

Pyrimidine carboxylic acids
 Pyrimidine carboxylic acidsaminocyclopyrachlor338  OAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure

Quinoline carboxylic acids
 Quinoline carboxylic acidsquinclorac242BASFFacet, Impact, BAS 514HOAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure
 Quinoline carboxylic acidsquinmerac241BASFFiesta, Dublett, BAS 518HOAuxin Mimics Auxin Mimics Small Structure Medium Structure Large Structure
HRAC Global Heap, I.  The International Herbicide-Resistant Weed Database.  Online.  Tuesday, September 29, 2026.  Available at  www.weedscience.org

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