Description

Fenoxaprop-P-ethyl (CAS No. 71283-80-2) is a highly selective, post-emergence aryloxyphenoxypropionate herbicide widely used in agricultural applications for controlling grass weeds in broadleaf crops such as wheat, barley, and rice. Its molecular formula, C₁₈H₁₆ClNO₅, reflects its optimized chemical structure for enhanced herbicidal activity. This compound specifically targets acetyl-CoA carboxylase (ACCase), inhibiting fatty acid synthesis in susceptible grasses, leading to growth cessation and eventual plant death. Fenoxaprop-P-ethyl is the R-enantiomer of fenoxaprop-ethyl, offering superior efficacy and reduced application rates compared to racemic mixtures. Available in formulations such as emulsifiable concentrates (EC) and wettable powders (WP), it is valued for its systemic action and rapid absorption by foliage.

Packaged in high-quality, chemically resistant containers to ensure stability, Fenoxaprop-P-ethyl meets stringent purity standards (≥95%) for research and commercial use. Suitable for laboratory analysis, field trials, and large-scale agricultural applications, this product is ideal for researchers studying herbicide resistance mechanisms or developing integrated weed management strategies. Safety data sheets (SDS) and analytical certificates (CoA) are provided to ensure compliance with global regulatory standards.

Properties

• CAS Number: 71283-80-2
• Complexity: 443
• IUPAC Name: ethyl (2R)-2-[4-[(6-chloro-1,3-benzoxazol-2-yl)oxy]phenoxy]propanoate
• InChI: InChI=1S/C18H16ClNO5/c1-3-22-17(21)11(2)23-13-5-7-14(8-6-13)24-18-20-15-9-4-12(19)10-16(15)25-18/h4-11H,3H2,1-2H3/t11-/m1/s1
• InChI Key: PQKBPHSEKWERTG-LLVKDONJSA-N
• Exact Mass: 361.0717003
• Molecular Formula: C18H16ClNO5
• Molecular Weight: 361.8
• SMILES: CCOC(=O)[C@@H](C)OC1=CC=C(C=C1)OC2=NC3=C(O2)C=C(C=C3)Cl
• Topological: 70.8
• Monoisotopic Mass: 361.0717003
• Synonyms: Fenoxaprop-P-ethyl, 71283-80-2, Fenoxaprop P-ethyl, UNII-54CSW9U08K, RICESTAR, 54CSW9U08K, Fenoxaprop-P-ethyl [ISO:BSI], DTXSID2034598, PUMA UNIVERSAL, FURORE SUPER, PUMA SUPER, SUPER WHIP, WHIP SUPER, WHIP S, (R)-ETHYL FENOXAPROP, WHIP 360, FENOXAPROP-P ETHYL ESTER, DTXCID0014598, R-FENOXAPROP-ETHYL [MI], FENOXAPROP-P-ETHYL [ISO], (+)-(R)-FENOXAPROP-ETHYL, HOE-046360, Propanoic acid, 2-(4-((6-chloro-2-benzoxazolyl)oxy)phenoxy)-, ethyl ester, (2R)-, ETHYL (2R)-2-(4-(6-CHLORO-2-BENZOXAZOLYLOXY)PHENOXY)PROPIONATE, PROPANOIC ACID, 2-(4-((6-CHLORO-2-BENZOXAZOLYL)OXY)PHENOXY)-, ETHYL ESTER, (R)-, Propanoic acid, 2-[4-[(6-chloro-2-benzoxazolyl)oxy]phenoxy]-, ethyl ester, (2R)-, R-FENOXAPROP-ETHYL, 615-273-7, Ethyl (2R)-(+)-2-[4-(6-chlorobenzoxazol-2-yloxy)phenoxy]propionate, ethyl (2R)-2-[4-[(6-chloro-1,3-benzoxazol-2-yl)oxy]phenoxy]propanoate, SCHEMBL54125, Fenoxaprop-P-ethyl (Standard), CHEMBL2251729, HY-B2013R, PQKBPHSEKWERTG-LLVKDONJSA-N, HY-B2013, Tox21_301569, MFCD01310637, AKOS015994777, CS-5199, KS-5121, NCGC00255428-01, DA-73332, CAS-71283-80-2, NS00066822, D95951, A837141, Fenoxaprop-P-ethyl 100 microg/mL in Acetonitrile, BRD-K44777569-001-01-7, Fenoxaprop-P-ethyl, PESTANAL(R), analytical standard, Q16064370, Ethyl (2R)-(+)-2-[4-(6-chlorobenzoxazol-2-yloxy)phenoxy]propionate, 95%, ethyl (2R)-2-[4-[(6-chloranyl-1,3-benzoxazol-2-yl)oxy]phenoxy]propanoate, (2R)-2-[4-[(6-chloro-1,3-benzoxazol-2-yl)oxy]phenoxy]propanoic acid ethyl ester

Fenoxaprop-P-ethyl is primarily applied to control annual and perennial grass weeds in cereal crops, including wild oats and barnyard grass. Its post-emergence activity makes it effective when sprayed directly onto young, actively growing weeds. The herbicide is often used in combination with safeners to minimize crop injury in sensitive varieties. Researchers utilize Fenoxaprop-P-ethyl to investigate ACCase-inhibitor resistance in weed populations or to develop synergistic herbicide mixtures.

Safety and Hazards

GHS Hazard Statements

• H317: May cause an allergic skin reaction [Warning Sensitization, Skin]
• H373: May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]
• H410: Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]

Precautionary Statements

• P260, P261, P272, P273, P280, P302+P352, P319, P321, P333+P317, P362+P364, P391, and P501

Hazard Classes and Categories

• Skin Sens. 1 (100%)
• Repr. 2 (100%)
• STOT RE 2 (100%)
• Aquatic Acute 1 (100%)
• Aquatic Chronic 1 (100%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.