Pentoxazone 

Pentoxazone is a protoporphyrinogen IX oxidase (PPO)-inhibiting herbicide. Pentoxazone inhibits chlorophyll and heme synthesis, drives protoporphyrinogen IX accumulation and oxidation, and generates singlet oxygen to oxidize cell membranes and induce cell damage.Pentoxazone suppresses fresh weight growth of multiple weed species and shows low activity against weedy rice. Pentoxazone can be used for the research of direct-seeding rice field weed management^[1].

Pentoxazone (225-450 g/hm²; 21 d post-treatment) exhibits broad-spectrum herbicidal activity against direct-seeding rice field weeds, with >90% fresh weight inhibition of 5 weed species at 225 g/hm² and 7 weed species at 450 g/hm², while showing low activity against Oryza sativa f. spontanea^[1].
Pentoxazone (60-600 g/hm²) has high herbicidal activity against Echinochloa crus-galli, Digitaria sanguinalis, Eclipta prostrata, and Cyperus iria, with GR₅₀ values ranging from 82.15 to 189.17 g/hm² and GR₉₀ values ranging from 158.60 to 513.01 g/hm^2[1].
Pentoxazone (450-1800 g/hm²; 4 times) is safe for 8 tested main rice varieties at doses up to 1800 g/hm², with plant height inhibition rates of 1.89%-5.16% and fresh weight inhibition rates of 1.47%-4.14% at the highest tested dose^[1].
Pentoxazone (0-2700 g/hm²) has good selectivity between 4 tested rice varieties and 4 direct-seeding rice field weeds, with selectivity indexes ranging from 3.27 to 28.24, and shows better selectivity between rice and Eclipta prostrata, Cyperus iria than the reference herbicide^[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

353.77

C₁₇H₁₇ClFNO₄

110956-75-7

O=C1OC(C(=O)N1C=2C=C(OC3CCCC3)C(Cl)=CC2F)=C(C)C

Room temperature in continental US; may vary elsewhere.

Please store the product under the recommended conditions in the Certificate of Analysis.

• [1]. XING Y, et al. Evaluation of laboratory bioactivity and field efficacy of pentoxazone on weeds in direct-seeding rice fields[J]. Chinese Journal of Pesticide Science, 2023, 25(1): 117-125.