Quinclorac

Quinclorac is a selective herbicide used primarily to control weeds in rice crops,[1] but is also used on other agricultural crops and is found in some household herbicides for lawn use. Most lawn maintenance companies use the product for the control of annual grass weeds like crabgrass.

Quinclorac
Names
Preferred IUPAC name
3,7-Dichloroquinoline-8-carboxylic acid
Other names
Quinchlorac
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.100.457
KEGG
UNII
  • InChI=1S/C10H5Cl2NO2/c11-6-3-5-1-2-7(12)8(10(14)15)9(5)13-4-6/h1-4H,(H,14,15)
    Key: FFSSWMQPCJRCRV-UHFFFAOYSA-N
  • InChI=1/C10H5Cl2NO2/c11-6-3-5-1-2-7(12)8(10(14)15)9(5)13-4-6/h1-4H,(H,14,15)
    Key: FFSSWMQPCJRCRV-UHFFFAOYAE
  • O=C(O)c1c(Cl)ccc2cc(Cl)cnc12
Properties
C10H5Cl2NO2
Molar mass 242.06 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Quinclorac is considered a synthetic auxin.[1][2] Although it has been considered in the past to also have a cellulose herbicide action (and as of March 2021 is still listed as such in Heap's database)[3] it was shown in 2003 to have no CBI action.[4][5]

References
  1. Grossmann, K (1998). "Quinclorac belongs to a new class of highly selective auxin herbicides". Weed Science. 46 (6): 707–716. doi:10.1017/S004317450008975X.
  2. Grossmann, Klaus; Kwiatkowski, Jacek (2000). "The Mechanism of Quinclorac Selectivity in Grasses". Pesticide Biochemistry and Physiology. Elsevier. 66 (2): 83–91. doi:10.1006/pest.1999.2461. ISSN 0048-3575. S2CID 84092985.
  3. "List of Herbicide Resistant Weeds by Herbicide Mode of Action (L/26)". International Survey of Herbicide Resistant Weeds. Herbicide Resistance Action Committee. Retrieved 2021-03-14.
  4. Tresch, Stefan; Grossmann, Klaus (2003). "Quinclorac does not inhibit cellulose (cell wall) biosynthesis in sensitive barnyard grass and maize roots". Pesticide Biochemistry and Physiology. Elsevier. 75 (3): 73–78. doi:10.1016/s0048-3575(03)00013-0. ISSN 0048-3575. S2CID 84212641.
  5. Tresch, Stefan; Grossmann, Klaus (2003). "Erratum to "Quinclorac does not inhibit cellulose (cell wall) biosynthesis in sensitive barnyard grass and maize roots"". Pesticide Biochemistry and Physiology. Elsevier. 76 (2): 70–71. doi:10.1016/s0048-3575(03)00064-6. ISSN 0048-3575. S2CID 84794877.
  • Quinclorac in the Pesticide Properties DataBase (PPDB)


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