MCPB

MCPB
Names
	IUPAC name 4-(4-Chloro-2-methylphenoxy)butanoic acid
Identifiers
CAS Number	94-81-5 ;
3D model (JSmol)	Interactive image;
ChemSpider	6938 ;
ECHA InfoCard	100.002.151
PubChem CID	7207;
UNII	OA1Z4N1842 ;
CompTox Dashboard (EPA)	DTXSID4024193 ;
	InChI InChI=1S/C11H13ClO3/c1-8-7-9(12)4-5-10(8)15-6-2-3-11(13)14/h4-5,7H,2-3,6H2,1H3,(H,13,14) Key: LLWADFLAOKUBDR-UHFFFAOYSA-N ; InChI=1/C11H13ClO3/c1-8-7-9(12)4-5-10(8)15-6-2-3-11(13)14/h4-5,7H,2-3,6H2,1H3,(H,13,14) Key: LLWADFLAOKUBDR-UHFFFAOYAB;
	SMILES CC1=C(C=CC(=C1)Cl)OCCCC(=O)O;
Properties
Chemical formula	C11H13ClO3
Molar mass	228.67 g/mol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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	Infobox references

MCPB, 2,4-MCPB, 4-(4-chloro-o-tolyloxy)butyric acid (IUPAC), or 4-(4-chloro-2-methylphenoxy)butanoic acid (CAS) is a phenoxybutyric herbicide. In the United States it is registered for use on pea crops before flowering, for post-emergence control of broadleaf annual and perennial weeds including Canadian thistle, buttercup, mustard, purslane, ragweed, common lambsquarters, pigweed, smartweed, sowthistle, and morning glory. It has low to moderate acute toxicity, with kidney and liver effects as the main hazard concerns. It is not volatile, persistent, or likely to bioconcentrate.

A variety of methods have been developed for its analysis.[1] In the U.S., the maximum residue permitted on peas is 0.1 parts per million.[2]

References

Wells, M. J. M.; Yu, L. Z. (2000). "Solid-phase extraction of acidic herbicides". Journal of Chromatography A. 885 (1–2): 237–250. doi:10.1016/S0021-9673(00)00206-5. PMID 10941675.CS1 maint: uses authors parameter (link)
"RED FACTS; MCPB". US EPA.

External links

MCPB in the Pesticide Properties DataBase (PPDB)

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[1] Wells, M. J. M.; Yu, L. Z. (2000). "Solid-phase extraction of acidic herbicides". Journal of Chromatography A. 885 (1–2): 237–250. doi:10.1016/S0021-9673(00)00206-5. PMID 10941675.CS1 maint: uses authors parameter (link)

[2] "RED FACTS; MCPB". US EPA.