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Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: Imazethapyr
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Purity: 98.0%
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81335-77-5

81335-77-5 structure

81335-77-5 structure

Name: Imazethapyr
Chemical Name: imazethapyr
CAS Number: 81335-77-5
Molecular Formula: C₁₅H₁₉N₃O₃
Molecular Weight: 289.33000
Catalog: Chemical pesticide herbicide Benzene herbicide
Create Date: 2018-02-21 08:00:00
Modify Date: 2026-07-09 05:51:46
Imazethapyr is an imidazolinone herbicide used in crops. Imazethapyr can protect crops from damage by weeds and annual grasses[1][2].

Name	imazethapyr
Synonyms	Imazethapyr 10 μg/mL in Acetonitrile (+-)-midazol-2-yl)-5-ethyl ac263 Micao smoke Imazethapyr in Acetonitrile 2-(4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl)-5-ethyl-3-pyridinecboxylic acid PIVOT(R) 5-ethyl-2-(4-methyl-5-oxo-4-propan-2-yl-1H-imidazol-2-yl)pyridine-3-ca rboxylic acid Chondroitin Sulfate Sodium Salt Impurity 4 5-ethyl-2-(4-methyl-5-oxo-4-propan-2-yl-1H-imidazol-2-yl)pyridine-3-carboxylic acid Imazethapyr 100 μg/ml Acetonitrile imazethapyr (ansi,bsi,iso) Imazethapy Imazethapyr@1000 μg/mL in Acetonitrile Imazethapyr 100mg [81-5] 5-ethyl-2-(4-methyl-5-oxo-4-propan-2-yl-1H-imidazol-2-yl)-3-pyridinecboxylic acid PIVOT PURSUIT(R) (RS)-5-ETHYL-2-(4-ISOPROPYL-4-METHYL-5-OXO-2-IMIDAZOLIN-2-YL)-NICOTINIC ACID rac-5-ethyl-2-[(4R)-4-methyl-5-oxo-4-(propan-2-yl)-4,5-dihydro-1H-imidazol-2-yl]pyridine-3-carboxylic acid 2-(4,5-DIHYDRO-4-ISOPROPYL-4-METHYL-5-OXO-1H-IMIDAZOL-2-YL)-5-ETHYL-3-PYRIDINECBOXYLIC ACID C14283500 Imazethapyr Imazethapyr 5 SL Weed Control Herbicides in most major crops 81- 5 3-Pyridinecboxylic acid5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl-5-ethyl IMazethapyr API PURSUIT DG MFCD00274561 mazethapyr Imazethapyr,2-(4,5-Dihydro-4-isopropyl-4-methyl-5-oxo-1H-imidazol-2-yl)-5-ethyl-3-pyridinecboxylic acid (+/-)-2-[4,5-dihydro-4-methyl-4-(1-methyltheyl)-5-oxo 5-Ethyl-2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)nicotinic acid 5-Ethyl-2-(4-isopropyl-4-methyl-5-oxo-4,5-dihydro-1H-imidazol-2-yl)nicotinic acid PURSUIT Imazethapyr Solution, 1000ppm OVERTOP 5-ethyl-2-(4-isopropyl-4-Methyl-5-oxo-4,5-dihydro-1H-iMidazol-2-yl)nicotinic acid Imazethapyr aqueous solution 2-(4-Isopropyl-4-methyl-5-oxo-2-imidazoline-2-yl)-5-ethylpyridine-3-cboxylic acid IMazethapry 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-ethyl-3-pyridinecarboxylic acid IMAZETHAPYR, 100MG, NEAT 5-dihydro-4-methyl-4(1-methylethyl)-5-oxo-1h-imidazol-2yl)-5-ethyl-3-(+-)-2-( 5-ethyl-2-[(RS)-4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl]nicotinic acid Imazethapyr@100 μg/mL in MeOH 2-[4,5-Dihydro-4-methyl-4-isopropyl-5-oxo-1H-imidazol-2-yl]-5-ethyl-3-pyridinecboxylic acid L14283500ALImazethapyr 10μg/mLin Acetonitril Imazethapyr PESTANAL(R), analytical standd Imazethapyr@100 μg/mL in Acetonitrile (4,5-dihydro-4-Methyl-4-(1-Methylethyl)-5-oxo-1H-iMidazol-2-yl)-5-ethyl-3-pyridinecbo 5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1h-imidazol-2-yl)-5-ethyl-2-((+-)-3-pyridinecboxylicaci 5-Ethyl-2-(4,5-dihydro-4-isopropyl-4-methyl-5-oxo-1H-imidazole-2-yl)-3-pyridinecboxylic acid

Description	Imazethapyr is an imidazolinone herbicide used in crops. Imazethapyr can protect crops from damage by weeds and annual grasses[1][2].
Related Catalog	Research Areas >> Others Signaling Pathways >> Others >> Others
In Vitro	Imazethapyr belongs to the imidazolinones family of herbicides that are being extensively used in a wide range of cropping systems to enhance crop yields and protect crops from damage by weeds and annual grasses in soybean and peanut. Imazethapyr would affect the transcription of photosynthesis-related genes and inhibit the antioxidant system of the plants and affect the chlorophyll synthesis[2].
References	[1]. Luca Carena, et al. Modelling the photochemistry of imazethapyr in rice paddy water. Sci Total Environ. 2018 Dec 10;644:1391-1398. [2]. Yanqiang Zhou, et al. Preparation of Imazethapyr Surface Molecularly Imprinted Polymers for Its Selective Recognition of Imazethapyr in Soil Samples. J Anal Methods Chem. 2018 Sep 30;2018:7535417.

Density	1.28 g/cm3
Boiling Point	446.8ºC at 760 mmHg
Melting Point	169-173ºC
Molecular Formula	C₁₅H₁₉N₃O₃
Molecular Weight	289.33000
Flash Point	224ºC
Exact Mass	289.14300
PSA	91.65000
LogP	1.39770

CHEMICAL IDENTIFICATION

RTECS NUMBER :: US5682900

CHEMICAL NAME :: 3-Pyridinecarboxylic acid, 2-(4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-im idazol-2- yl)-5-ethyl-, (+-)-

CAS REGISTRY NUMBER :: 81335-77-5

LAST UPDATED :: 199701

DATA ITEMS CITED :: 7

MOLECULAR FORMULA :: C15-H19-N3-O3

MOLECULAR WEIGHT :: 289.37

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >5 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: PEMNDP Pesticide Manual. (The British Crop Protection Council, 20 Bridport Rd., Thornton Heath CR4 7QG, UK) V.1- 1968- Volume(issue)/page/year: 9,489,1991

TYPE OF TEST :: LC50 - Lethal concentration, 50 percent kill

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 3270 mg/m3

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: PEMNDP Pesticide Manual. (The British Crop Protection Council, 20 Bridport Rd., Thornton Heath CR4 7QG, UK) V.1- 1968- Volume(issue)/page/year: 9,489,1991

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: >5 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: PEMNDP Pesticide Manual. (The British Crop Protection Council, 20 Bridport Rd., Thornton Heath CR4 7QG, UK) V.1- 1968- Volume(issue)/page/year: 9,489,1991

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: >2 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: FMCHA2 Farm Chemicals Handbook. (Meister Pub., 37841 Euclid Ave., Willoughy, OH 44094) Volume(issue)/page/year: -,C255,1991

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Bird - quail

DOSE/DURATION :: >2150 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: PEMNDP Pesticide Manual. (The British Crop Protection Council, 20 Bridport Rd., Thornton Heath CR4 7QG, UK) V.1- 1968- Volume(issue)/page/year: 9,489,1991

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Bird - duck

DOSE/DURATION :: >2150 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: PEMNDP Pesticide Manual. (The British Crop Protection Council, 20 Bridport Rd., Thornton Heath CR4 7QG, UK) V.1- 1968- Volume(issue)/page/year: 9,489,1991

Personal Protective Equipment	Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
RIDADR	NONH for all modes of transport
RTECS	US5682900

40963-14-2 structure

40963-14-2

105151-39-1 structure

105151-39-1

~86%

81335-77-5 structure

81335-77-5

Literature: Vasiliev, Aleksey N.; Lopez, Antonio F.; Fernandez, Julio D.; Mocchi, Anibal J. Molecules, 2004 , vol. 9, # 7 p. 535 - 540

Precursor 2
40963-14-2 105151-39-1
DownStream 0

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