3(2H)-Pyridazinone,4,5-dichloro-6-hydroxy

Modify Date: 2026-07-25 09:17:09

3(2H)-Pyridazinone,4,5-dichloro-6-hydroxy Structure
3(2H)-Pyridazinone,4,5-dichloro-6-hydroxy structure
Common Name 3(2H)-Pyridazinone,4,5-dichloro-6-hydroxy
CAS Number 6641-32-3 Molecular Weight 180.97700
Density 1.76g/cm3 Boiling Point 413.5ºC at 760 mmHg
Molecular Formula C4H2Cl2N2O2 Melting Point 295ºC
MSDS N/A Flash Point 203.9ºC

 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name 4,5-dichloro-1,2-dihydropyridazine-3,6-dione
Synonym More Synonyms

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density 1.76g/cm3
Boiling Point 413.5ºC at 760 mmHg
Melting Point 295ºC
Molecular Formula C4H2Cl2N2O2
Molecular Weight 180.97700
Flash Point 203.9ºC
Exact Mass 179.94900
PSA 65.98000
LogP 0.78230
Index of Refraction 1.602
InChIKey VNYHXKVIOVXVDB-UHFFFAOYSA-N
SMILES O=c1[nH][nH]c(=O)c(Cl)c1Cl

 Safety Information

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

HS Code 2933990090

 Synthetic Route

This table presents publicly reported synthetic routes, reaction conditions, reactants and product information of the compound.

~88%

3(2H)-Pyridazinone,4,5-dichloro-6-hydroxy Structure

3(2H)-Pyridazin...

CAS#:6641-32-3

Learn More
Literature: Ewing, William R.; Zhu, Yeheng; Ellsworth, Bruce A. Patent: US2006/287323 A1, 2006 ; Location in patent: Page/Page column 7 ; US 20060287323 A1

 Precursor & DownStream

This table lists upstream starting materials and downstream derivative products related to this chemical.

Precursor  1

DownStream  0

 Customs

This table shows customs‑related data including HS‑code, tariff and regulatory conditions for import and export.

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%

 Bioassay

View more

This table contains target information, in‑vitro & in‑vivo assay data for this compound.

Name: Luminescence-based cell-based primary high throughput screening assay to identify ago...
Source: The Scripps Research Institute Molecular Screening Center
Target: mu-type opioid receptor isoform MOR-1 [Homo sapiens]
External Id: OPRM1-OPRD1_AG_LUMI_1536_1X%ACT PRUN
Name: QFRET-based biochemical primary high throughput screening assay to identify exosite i...
Source: The Scripps Research Institute Molecular Screening Center
Target: disintegrin and metalloproteinase domain-containing protein 17 preproprotein [Homo sapiens]
External Id: ADAM17_INH_QFRET_1536_1X%INH PRUN
Name: Fluorescence-based cell-based primary high throughput screening assay to identify ago...
Source: The Scripps Research Institute Molecular Screening Center
Target: muscarinic acetylcholine receptor M1 [Homo sapiens]
External Id: CHRM1_AG_FLUO8_1536_1X%ACT PRUN
Name: Fluorescence polarization to screen for inhibitor that competite the binding of FadD2...
Source: Broad Institute
Target: FATTY-ACID-CoA LIGASE FADD28 (FATTY-ACID-CoA SYNTHETASE)
External Id: 2147-01_Inhibitor_SinglePoint_HTS_Activity
Name: Bursicon-induced LGR2 mediated cAMP production in LGR-2/CRE6x-Luciferase co-transfect...
Source: Broad Institute
Target: N/A
External Id: Bursicon-induced LGR2 mediated cAMP production in LGR-2/CRE6x-Luciferase co-transfected HEK293 cells Inhibition - 7011-01_Antagonist_SinglePoint_HTS_Activity
Name: Primary Screen Inhibitors of CD40 Signaling in BL2 Cells Measured in Cell-Based Syste...
Source: Broad Institute
Target: N/A
External Id: 7124-01_Inhibitor_SinglePoint_HTS_Activity
Name: Fluorescence-based cell-based primary high throughput screening assay to identify pos...
Source: The Scripps Research Institute Molecular Screening Center
Target: muscarinic acetylcholine receptor M1 [Homo sapiens]
External Id: CHRM1_PAM_FLUO8_1536_1X%ACT PRUN
Name: Fluorescence polarization-based biochemical high throughput primary assay to identify...
Source: The Scripps Research Institute Molecular Screening Center
Target: RecName: Full=Sialate O-acetylesterase; AltName: Full=H-Lse; AltName: Full=Sialic acid-specific 9-O-acetylesterase; Flags: Precursor [Homo sapiens]
External Id: SIAE_INH_FP_1536_1X%INH PRUN
Name: uHTS identification of small molecule modulators of NR3A
Source: Burnham Center for Chemical Genomics
Target: N/A
External Id: SBCCG-A1015-NR3A-Primary-Assay
Name: uHTS identification of small molecule modulators of Rev-erb Alpha.
Source: Burnham Center for Chemical Genomics
Target: N/A
External Id: SBCCG-A1016-RevErbaLBD-Primary-Assay
Total 98, Current Page 1 of 10
1
2
3
4
5

 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

4,5-DICHLORO-1,2,3,6-TETRAHYDROPYRIDAZINE-3,6-DIONE
dichloropyridazine-3,6-diol
4,5-dichloro-1,2-dihydro-pyridazine-3,6-dione
4,5-dichloropyridazine-3,6-diol
4,5-Dichlor-1,2-dihydro-pyridazin-3,6-dion

  | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What is the molecular weight of 4,5-dichloro-1,2-dihydropyridazine-3,6-dione?
A: Molecular weight of 4,5-dichloro-1,2-dihydropyridazine-3,6-dione is 180.97700.
Q: What is the English name of 4,5-dichloro-1,2-dihydropyridazine-3,6-dione?
A: The English name of 4,5-dichloro-1,2-dihydropyridazine-3,6-dione is 4,5-dichloro-1,2-dihydropyridazine-3,6-dione.
Q: What is the CAS number of 4,5-dichloro-1,2-dihydropyridazine-3,6-dione?
A: CAS number of 4,5-dichloro-1,2-dihydropyridazine-3,6-dione is 6641-32-3.
Q: What English synonyms does 4,5-dichloro-1,2-dihydropyridazine-3,6-dione have?
A: English synonyms of 4,5-dichloro-1,2-dihydropyridazine-3,6-dione: 4,5-DICHLORO-1,2,3,6-TETRAHYDROPYRIDAZINE-3,6-DIONE, dichloropyridazine-3,6-diol, 4,5-dichloro-1,2-dihydro-pyridazine-3,6-dione, 4,5-dichloropyridazine-3,6-diol, 4,5-Dichlor-1,2-dihydro-pyridazin-3,6-dion.
Q: What is the polar surface area (PSA) of 4,5-dichloro-1,2-dihydropyridazine-3,6-dione?
A: Polar surface area (PSA) of 4,5-dichloro-1,2-dihydropyridazine-3,6-dione is 65.98000.
Q: What is the InChIKey of 4,5-dichloro-1,2-dihydropyridazine-3,6-dione?
A: InChIKey of 4,5-dichloro-1,2-dihydropyridazine-3,6-dione is VNYHXKVIOVXVDB-UHFFFAOYSA-N.
Q: What is the boiling point of 4,5-dichloro-1,2-dihydropyridazine-3,6-dione?
A: Boiling point of 4,5-dichloro-1,2-dihydropyridazine-3,6-dione is 413.5ºC at 760 mmHg.
Q: What is the SMILES notation of 4,5-dichloro-1,2-dihydropyridazine-3,6-dione?
A: SMILES notation of 4,5-dichloro-1,2-dihydropyridazine-3,6-dione is O=c1[nH][nH]c(=O)c(Cl)c1Cl.
Q: What is the molecular formula of 4,5-dichloro-1,2-dihydropyridazine-3,6-dione?
A: Molecular formula of 4,5-dichloro-1,2-dihydropyridazine-3,6-dione is C4H2Cl2N2O2.
Q: What is the LogP of 4,5-dichloro-1,2-dihydropyridazine-3,6-dione?
A: LogP of 4,5-dichloro-1,2-dihydropyridazine-3,6-dione is 0.78230.

 factory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
Dayang Chem (Hangzhou) Co., Ltd.
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.