4,5-Dibromo-2-methyl-3(2H)-pyridazinone

Modify Date: 2025-09-18 18:21:41

4,5-Dibromo-2-methyl-3(2H)-pyridazinone structure	Common Name	4,5-Dibromo-2-methyl-3(2H)-pyridazinone
	CAS Number	13645-74-4	Molecular Weight	267.906
	Density	2.2±0.1 g/cm3	Boiling Point	236.9±50.0 °C at 760 mmHg
	Molecular Formula	C₅H₄Br₂N₂O	Melting Point	120 °C
	MSDS	N/A	Flash Point	97.1±30.1 °C

Name	4,5-dibromo-2-methylpyridazin-3-one
Synonym	More Synonyms

Density	2.2±0.1 g/cm3
Boiling Point	236.9±50.0 °C at 760 mmHg
Melting Point	120 °C
Molecular Formula	C₅H₄Br₂N₂O
Molecular Weight	267.906
Flash Point	97.1±30.1 °C
Exact Mass	265.869019
PSA	34.89000
LogP	0.00
Vapour Pressure	0.0±0.5 mmHg at 25°C
Index of Refraction	1.679

CHEMICAL IDENTIFICATION

RTECS NUMBER :: UR6178000

CHEMICAL NAME :: 3(2H)-Pyridazinone, 4,5-dibromo-2-methyl-

CAS REGISTRY NUMBER :: 13645-74-4

LAST UPDATED :: 199212

DATA ITEMS CITED :: 2

MOLECULAR FORMULA :: C5-H4-Br-N2-O

MOLECULAR WEIGHT :: 188.02

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD - Lethal dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: >1 gm/kg

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

REFERENCE :: FRPSAX Farmaco, Edizione Scientifica. (Casella Postale 227, 27100 Pavia, Italy) V.8-43 1953-88 For publisher information, see FRMCE8 Volume(issue)/page/year: 40,,921,1985

TYPE OF TEST :: LD - Lethal dose

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: >300 mg/kg

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

REFERENCE :: FRPSAX Farmaco, Edizione Scientifica. (Casella Postale 227, 27100 Pavia, Italy) V.8-43 1953-88 For publisher information, see FRMCE8 Volume(issue)/page/year: 40,921,1985

HS Code	2933990090

Precursor 2
CAS#:5788-58-9 4,5-Dibromopyri... CAS#:74-88-4 methyl iodide
DownStream 3
CAS#:13506-27-9 5-amino-2-methy... CAS#:65269-63-8 5-AMINO-4-BROMO... CAS#:64178-59-2 4-BROMO-5-HYDRO...

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%

4,5-dibromo-2-methylpyridazin-3(2H)-one

3(2H)-Pyridazinone, 4,5-dibromo-2-methyl-

3(2H)-Pyridazinone,4,5-dibromo-2-methyl

4,5-Dibromo-2-methyl-3(2H)-pyridazinone

4,5-dibromo-2-methyl-2H-pyridazin-3-one

2-methyl-4,5-dibromo-3(2H)-pyridazinone

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Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 4,5-Dibromo-2-methyl-3(2H)-pyridazinone
Price: Check
Purity: 98.0%
Delivery: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Shanghai Amole Biotechnology Co., Ltd.
China
Product Name: 4,5-Dibromo-2-methyl-3(2H)-pyridazinone
Price: ￥Inquiry/100mg ￥Inquiry/1g ￥Inquiry/250mg ￥Inquiry/5g
Purity: 98.0%
Delivery: Inquiry
Contact: Xiyao Wang
Email: 3623107365@qq.com

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Price: ￥4188.6/1g

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4,5-Dibromo-2-methyl-3(2H)-pyridazinone

Names

Chemical & Physical Properties

Toxicological Information

CHEMICAL IDENTIFICATION

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

Safety Information

Precursor & DownStream

Customs

Synonyms

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.