Description

Pinoxaden (CAS No. 243973-20-8) is a highly selective post-emergence herbicide belonging to the phenylpyrazolin class, with the molecular formula C₂₃H₃₂N₂O₄. This professional-grade agrochemical is designed for precision weed control in cereal crops, specifically targeting grass weeds while ensuring crop safety. Pinoxaden functions as an acetyl-CoA carboxylase (ACCase) inhibitor, disrupting fatty acid synthesis in susceptible plants, leading to growth inhibition and eventual plant death. It is widely recognized for its systemic action, rapid absorption, and translaminar mobility, making it highly effective against resistant weed populations.

Available in analytical standard and commercial formulations, Pinoxaden is characterized by its high purity (>98%) and stability under recommended storage conditions. It is compatible with various adjuvants and tank-mix partners, enhancing its field performance. Suitable for research, agricultural applications, and regulatory compliance testing, this product meets the stringent quality standards required by scientists and agronomists.

Properties

• CAS Number: 243973-20-8
• Complexity: 652
• IUPAC Name: [8-(2,6-diethyl-4-methyl-phenyl)-7-oxo-1,2,4,5-tetrahydropyrazolo[1,2-d][1,4,5]oxadiazepin-9-yl] 2,2-dimethylpropanoate
• InChI: InChI=1S/C23H32N2O4/c1-7-16-13-15(3)14-17(8-2)18(16)19-20(26)24-9-11-28-12-10-25(24)21(19)29-22(27)23(4,5)6/h13-14H,7-12H2,1-6H3
• InChI Key: MGOHCFMYLBAPRN-UHFFFAOYSA-N
• LogP: log Kow = 3.2
• Exact Mass: 400.23620751
• Molecular Formula: C23H32N2O4
• Molecular Weight: 400.5
• SMILES: CCC1=CC(=CC(=C1C2=C(N3CCOCCN3C2=O)OC(=O)C(C)(C)C)CC)C
• Topological: 59.1
• Monoisotopic Mass: 400.23620751
• Color/Form: Fine white powder
• Odor: Odorless
• Melting Point: 120.5-121.6 °C
• Solubility: Solubilities : acetone 250; dichloromethane >500; ethyl acetate 130; hexane 1.0; methanol 260; octanol 140; toluene 130
• Density: 1.16 at 21 °C
• Vapor Pressure: 2.0X10-4 mPa at 20 °C; 4.6X10-4 mPa at 25 °C /SRC: 3.5X10-9 mm Hg at 25 °C/
• Synonyms: Pinoxaden, 243973-20-8, Pinoxaden [ISO], UNII-U55GLF9LV9, U55GLF9LV9, DTXSID8034823, CHEBI:83524, HSDB 7884, PINOXADEN [MI], [8-(2,6-diethyl-4-methylphenyl)-7-oxo-1,2,4,5-tetrahydropyrazolo[1,2-d][1,4,5]oxadiazepin-9-yl] 2,2-dimethylpropanoate, DTXCID6014823, 8-(2,6-diethyl-4-methylphenyl)-1,2,4,5-tetrahydro-7-oxo-7H-pyrazolo(1,2-d)(1,4,5)oxadiazepin-9-yl 2,2-dimethylpropanoate, Propanoic acid, 2,2-dimethyl-, 8-(2,6-diethyl-4-methylphenyl)-1,2,4,5-tetrahydro-7-oxo-7H-pyrazolo[1,2-d][1,4,5]oxadiazepin-9-yl ester, 8-(2,6-DIETHYL-P-TOLYL)-1,2,4,5-TETRAHYDRO-7-OXO-7H-PYRAZOLO(1,2-D)(1,4,5)OXADIAZEPIN-9-YL 2,2-DIMETHYLPROPIONATE, 8-(2,6-diethyl-p-tolyl)-1,2,4,5-tetrahydro-7-oxo-7H-pyrazolo[1,2-d][1,4,5]oxadiazepin-9-yl 2,2-dimethylpropionate, Propanoic acid, 2,2-dimethyl-, 8-(2,6-diethyl-4-methylphenyl)-1,2,4,5-tetrahydro-7-oxo-7H-pyrazolo(1,2-d)(1,4,5)oxadiazepin-9-yl ester, (8-(2,6-diethyl-4-methylphenyl)-7-oxo-1,2,4,5-tetrahydropyrazolo(1,2-d)(1,4,5)oxadiazepin-9-yl) 2,2-dimethylpropanoate, USEPA/OPP Pesticide Code: 147500, 8-(2,6-diethyl-p-tolyl)-1,2,4,5-tetrahydro-7-oxo-7H-pyrazolo, 8-(2,6-diethyl-4-methylphenyl)-1,2,4,5-tetrahydro-7-oxo-7H-pyrazolo, Propanoic acid, 2,2-dimethyl-, 8-(2,6-diethyl-4-methylphenyl)-1,2,4,5-tetrahydro-7-ox o-7H-pyrazolo, Pinoxaden 100 microg/mL in Acetonitrile, NewAxial; 8-(2,6-Diethyl-4-methylphenyl)-1,2,4,5-tetrahydro-7-oxo-7H-pyrazolo[1,2-d][1,4,5]oxadiazepin-9-yl 2,2-Dimethyl-propanoic Acid Ester;, SCHEMBL64416, CHEMBL1866631, MGOHCFMYLBAPRN-UHFFFAOYSA-N, BCP30997, TJA97320, Tox21_304033, NCGC00163860-01, NCGC00356993-01, CAS-243973-20-8, CS-0572079, NS00000321, Pinoxaden, PESTANAL(R), analytical standard, EN300-1661086, Q15632855, Z2574926827, 8-(2,6-diethyl-4-methylphenyl)-7-oxo-1,2,4,5-tetrahydro-7H-pyrazolo[1,2-d][1,4,5]oxadiazepin-9-yl 2,2-dimethylpropanoate, 8-(2,6-diethyl-4-methylphenyl)-9-oxo-1H,2H,4H,5H,9H-pyrazolo[1,2-d][1,4,5]oxadiazepin-7-yl 2,2-dimethylpropanoate, Propanoic acid, 2,2-dimethyl-, 8-(2,6-diethyl-4-methylphenyl)-1,2,4,5-tetrahydro-7-oxo-7H-pyrazolo1,2-d1,4,5oxadiazepin-9-yl ester

Pinoxaden is primarily used as a post-emergence herbicide for controlling grass weeds in wheat, barley, and other cereal crops. Its mode of action involves inhibition of ACCase, critical for lipid biosynthesis in grasses. Applied at early growth stages of weeds, it ensures effective suppression of resistant biotypes. Pinoxaden is often formulated with safeners to enhance crop selectivity. Always follow local regulatory guidelines for application rates and safety protocols.

Safety and Hazards

GHS Hazard Statements

• H302: Harmful if swallowed [Warning Acute toxicity, oral]
• H317: May cause an allergic skin reaction [Warning Sensitization, Skin]
• H319: Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H332: Harmful if inhaled [Warning Acute toxicity, inhalation]
• H335: May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
• H361d: Suspected of damaging the unborn child [Warning Reproductive toxicity]
• H412: Harmful to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]

Precautionary Statements

• P203, P261, P264, P264+P265, P270, P271, P272, P273, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P317, P318, P319, P321, P330, P333+P317, P337+P317, P362+P364, P403+P233, P405, and P501

Hazard Classes and Categories

• Acute Tox. 4 (74.8%)
• Skin Irrit. 2 (20.8%)
• Skin Sens. 1B (83.2%)
• Eye Irrit. 2 (100%)
• Acute Tox. 4 (100%)
• STOT SE 3 (100%)
• Repr. 2 (16.4%)
• Repr. 2 (58.4%)
• Aquatic Acute 1 (74.8%)
• Aquatic Chronic 1 (28.8%)
• Aquatic Chronic 3 (81.9%)

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