Imazapyr

Modify Date: 2025-08-21 11:57:02

Imazapyr structure	Common Name	Imazapyr
	CAS Number	81334-34-1	Molecular Weight	261.276
	Density	1.3±0.1 g/cm3	Boiling Point	425.1±55.0 °C at 760 mmHg
	Molecular Formula	C₁₃H₁₅N₃O₃	Melting Point	169-173°C
	MSDS	Chinese USA	Flash Point	210.9±31.5 °C
	Symbol	GHS07	Signal Word	Warning

Name	imazapyr
Synonym	More Synonyms

Density	1.3±0.1 g/cm3
Boiling Point	425.1±55.0 °C at 760 mmHg
Melting Point	169-173°C
Molecular Formula	C₁₃H₁₅N₃O₃
Molecular Weight	261.276
Flash Point	210.9±31.5 °C
Exact Mass	261.111328
PSA	91.65000
LogP	0.51
Vapour Pressure	0.0±1.1 mmHg at 25°C
Index of Refraction	1.632
InChIKey	CLQMBPJKHLGMQK-UHFFFAOYSA-N
SMILES	CC(C)C1(C)N=C(c2ncccc2C(=O)O)NC1=O
Storage condition	0-6°C
Stability	Stable. Incompatible with strong oxidizing agents.

CHEMICAL IDENTIFICATION

RTECS NUMBER :: US5682500

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

CAS REGISTRY NUMBER :: 81334-34-1

LAST UPDATED :: 199612

DATA ITEMS CITED :: 6

MOLECULAR FORMULA :: C13-H15-N3-O3

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: 9,486,1991

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

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: >2 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: 9,486,1991

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 :: PEMNDP Pesticide Manual. (The British Crop Protection Council, 20 Bridport Rd., Thornton Heath CR4 7QG, UK) V.1- 1968- Volume(issue)/page/year: 9,486,1991

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: 9,487,1991

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: 9,487,1991 *** U.S. STANDARDS AND REGULATIONS *** EPA FIFRA 1988 PESTICIDE SUBJECT TO REGISTRATION OR RE-REGISTRATION FEREAC Federal Register. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) V.1- 1936- Volume(issue)/page/year: 54,7740,1989

Symbol	GHS07
Signal Word	Warning
Hazard Statements	H319-H412
Precautionary Statements	P273-P305 + P351 + P338
Personal Protective Equipment	dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes	Xi:Irritant;
Risk Phrases	R36;R52/53
Safety Phrases	S26-S61
RIDADR	NONH for all modes of transport
RTECS	US5682500
HS Code	2933990090

5-isopropyl-5-m...

CAS#:81334-62-5

~55%

Imazapyr

CAS#:81334-34-1

Literature: American Cyanamid Company Patent: US4474962 A1, 1984 ;

2-Picolinic acid

CAS#:98-98-6

FURO(3,4-B)PYRI...

CAS#:699-98-9

2-Amino-2,3-dim...

CAS#:40963-14-2

Imazapyr

CAS#:81334-34-1

Literature: US4518780 A1, ;

Precursor 4
CAS#:81334-62-5 5-isopropyl-5-m... CAS#:98-98-6 2-Picolinic acid CAS#:699-98-9 FURO(3,4-B)PYRI... CAS#:40963-14-2 2-Amino-2,3-dim...
DownStream 0

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Abiotic degradation (photodegradation and hydrolysis) of imidazolinone herbicides.

J. Environ. Sci. Health B 43(2) , 105-12, (2008)

The abiotic degradation of the imidazolinone herbicides imazapyr, imazethapyr and imazaquin was investigated under controlled conditions. Hydrolysis, where it occurred, and photodegradation both follo...

Acetohydroxyacid synthase (AHAS) in vivo assay for screening imidazolinone-resistance in sunflower (Helianthus annuus L.).

Plant Physiol. Biochem. 61 , 103-7, (2012)

The objective of this work was to evaluate the in vivo acetohydroxyacid synthase (AHAS) activity response to imidazolinones and its possible use as a selection method for evaluating AHAS inhibitor res...

Faster degradation of herbicidally-active enantiomer of imidazolinones in soils.

Chemosphere 79(11) , 1040-5, (2010)

Imidazolinones are chiral herbicides, comprised of two enantiomers with differential herbicidal activity. In this study, the selective degradation of enantiomers of the three imidazolinone herbicides,...

2-[(RS)-4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl]nicotinic acid

Charper

2-(4-Isopropyl-4-methyl-5-oxo-4,5-dihydro-1H-imidazol-2-yl)nicotinic acid

MFCD00144470

(±)-Imazapyr

2-[4,5-Dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-pyridinecarboxylic acid

Imazapyr

Arsenal 250A

isopropylamine Salt

3-Pyridinecarboxylic acid, 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-

3-Pyridinecarboxylic acid, 2-[4,5-dihydro-5-methyl-5-(1-methylethyl)-4-oxo-1H-imidazol-2-yl]-

T6NJ CVQ B- ET5MV DN CHJ CY1&1 C1

2-[4-methyl-4-(1-methylethyl)-5-oxo-4,5-dihydro-1H-imidazol-2-yl]pyridine-3-carboxylic acid

rac-2-[(4R)-4-methyl-5-oxo-4-(propan-2-yl)-4,5-dihydro-1H-imidazol-2-yl]pyridine-3-carboxylic acid

midazol-2-yl)

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Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Imazapyr
Price: Check
Purity: 98.0%
Delivery: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: Imazapyr
Price: ￥288.0/100mg
Purity: 98.0%
Delivery: Inquiry
Contact: Liu jia
Email: 2130147988@qq.com

DC Chemicals Limited
China
Product Name: Imazapyr acid
Price: $300.0/1g
Purity: 98.0%
Delivery: 3 Day
Contact: Tony Cao
Email: sales@dcchemicals.com

ShangHai DC Chemicals Co.,Ltd
China
Product Name: Imazapyr acid
Price: ￥Inquiry/1g
Purity: 98.9%
Delivery: 1 Day
Contact: Tony Lai
Email: order@dcchemicals.com

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Imazapyr

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Chemical & Physical Properties

Toxicological Information

CHEMICAL IDENTIFICATION

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

Safety Information

Synthetic Route

Precursor & DownStream

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The content on this webpage is sourced from various professional data sources. If you have any questions or concerns regarding the content, please feel free to contact service1@chemsrc.com.