50901-46-7

Basic information

• Product Name: Ethanone, 1-(4-pyridazinyl)- (9CI)
• Synonyms: 1-(Pyridazin-4-yl)ethanone;Ethanone, 1-(4-pyridazinyl)-;4-Acetylpyridazine;Methyl 4-pyridazinyl ketone;1-(pyridazin-4-yl)ethan-1-one;1-(Pyridazin-4-yl);Ethanone, 1-(4-pyridazinyl)- (9CI)
• CAS NO: 50901-46-7
• Molecular Formula: C₆H₆N₂O
• Molecular Weight: 122.12464
• Product Categories: ACETYLGROUP
• Mol File: 50901-46-7.mol

Chemical Properties

• Melting Point: 69-70℃
• Boiling Point: 285.872 °C at 760 mmHg
• Flash Point: 131.02 °C
• Appearance: /Solid
• Density: 1.136±0.06 g/cm3 (20 ºC 760 Torr)
• Vapor Pressure: 0.003mmHg at 25°C
• Refractive Index: 1.516
• Storage Temp.: Sealed in dry,Store in freezer, under -20°C
• PKA: 0.50±0.10(Predicted)
• CAS DataBase Reference: Ethanone, 1-(4-pyridazinyl)- (9CI)(CAS DataBase Reference)
• NIST Chemistry Reference: Ethanone, 1-(4-pyridazinyl)- (9CI)(50901-46-7)
• EPA Substance Registry System: Ethanone, 1-(4-pyridazinyl)- (9CI)(50901-46-7)

Safety Data

• Hazardous Substances Data: 50901-46-7(Hazardous Substances Data)

Usage

Uses

Used in Chemical Manufacturing:
Ethanone, 1-(4-pyridazinyl)(9CI) is used as an intermediate compound for the synthesis of various chemical products. Its unique molecular structure allows it to be a key component in the production of specialty chemicals, contributing to the development of new materials and compounds.
Used in Pharmaceutical Manufacturing:
In the pharmaceutical industry, Ethanone, 1-(4-pyridazinyl)(9CI) is utilized as a building block for the development of new drugs. Its presence in drug molecules can impart specific therapeutic properties, making it a valuable asset in the creation of novel pharmaceuticals aimed at treating various medical conditions.
Used in Research and Development:
Ethanone, 1-(4-pyridazinyl)(9CI) is employed as a research compound in scientific studies, particularly in the fields of organic chemistry and medicinal chemistry. Its unique properties and reactivity make it an interesting subject for exploration, potentially leading to new discoveries and advancements in these scientific disciplines.

InChI:InChI=1/C6H6N2O/c1-5(9)6-2-3-7-8-4-6/h2-4H,1H3

Upstream product

• 39123-39-2 ethyl pyridazine-4-carboxylate 
• 917-54-4 methyllithium 
• 75-52-5 nitromethane 
• 50901-42-3 pyridazine-4-carbaldehyde 
• 288-32-4 1H-imidazole 
• 2075-45-8 4-bromo-1H-pyrazole 
• 823189-69-1 N-methoxy-N-methylpyridazine-4-carboxamide 
• 75-16-1 methylmagnesium bromide 
• 50681-25-9 pyridazine-4-carboxylic acid 
• 530-62-1 1,1'-carbonyldiimidazole 

Downstream Products

• 124436-43-7 N'-[1-Pyridazin-4-yl-eth-(E)-ylidene]-hydrazinecarbodithioic acid methyl ester 
• 129593-86-8 6-(4-{N'-[1-Pyridazin-4-yl-eth-(E)-ylidene]-hydrazino}-phenyl)-4,5-dihydro-2H-pyridazin-3-one 
• 288-32-4 1H-imidazole 
• 2075-45-8 4-bromo-1H-pyrazole 

Relevant articles and documents

PYRIDAZINONE DERIVATIVES AND USE THEREOF AS P2X7 RECEPTOR INHIBITORS

Novel pyridazinone compounds of formula (I), which inhibit the purinergic P2X7 receptor and are useful for prevention, therapy and improvement of inflammatory and immunological diseases.

AMIDE DERIVATIVE

The present invention provides an amide derivative represented by the following general formula (1): wherein R1 represents a saturated cyclic amino group, R2 represents alkyl, halogen or haloalkyl, R3 represents hydrogen or halogen, Het 2 represents pyridyl or pyrimidinyl, and Het 1 represents a group of the formula [6], or a salt thereof, and a pharmaceutical composition comprising the same as an active ingredient. The compound of the present invention is useful as a BCR-ABL tyrosine kinase inhibitor.

Pyridazines.LI. On the Reactivity of Pyridazinecarbaldehydes towards Selected Active-Hydrogen Compounds

Reactions of 3-pyridazinecarbaldehyde and 3-pyridazinecarbaldehyde with various active methylene carbanions were studied.The products obtained in Knoevenagel reactions, Wittig-Horner-Emmons reactions, and Hantzsch-type reactions are presented.

Synthesis and antiviral activity of thiosemicarbazone derivatives of pyridazinecarbaldehydes and alkyl pyridazinyl ketones

Various novel thiosemicarbazones (TSCs) 15b-e, 16b-e, 17b-e, 18b-e, and 19b-e derived from 4-pyridazinecarbaldehyde, 3-pyridazinecarbaldehyde, 4-acetylpyridazine, 3-acetylpyridazine, and 3-propionylpyridazine were prepared and their cytotoxic and antiherpetic potentials were evaluated. It was found that the replacement of the 2-pyridyl-moiety in aldehyde derived compounds 20a-c by a 4-pyridazinyl group (compounds 15b-d) abolishes biological activity. However, in TSCs derived from 3-pyridazinecarbaldehyde (16b-d) the cytotoxic potency was considerably reduced (factor ~300), while the antiviral activity was largely retained. A total loss of biological activity occurred when the pyridyl group in TSC 20d, derived from 2-acetylpyridine, was replaced by the 4-pyridazinyl system (17d). By employment of the 3-pyridazinyl unit for isosteric modification, however, the cell toxicity could be reduced significantly (factor 100) without impairing the antiherpetic potential also in the series of TSCs derived from N-heteroaromatic ketones. It was observed that there is no obvious influence of the size of the cycloamino substituent on the biological activities in compounds 20a-d, 15b-d, 16b-d, 17b-d, and 18b-d. While the pyridine derived TSCs in our experiments proved clearly cytotoxic at lower concentrations than those being antivirally active, the aza-analogous compounds derived from 3-acetyl-pyridazine (18b-e) inhibited plaque formation at concentrations equal to those causing cytotoxic effects. The TSCs 16b-e derived from 3-pyridazinecarbaldehyde were found to show selective antiviral activity against HSV-1. In addition, a significant improvement of the water solubility of heteroaromatic TSCs could be achieved by the replacement of the CH-moiety in position 6 of the pyridine derivatives 20a-c by a nitrogen atom (compounds 16b-d).

ACIDIFYING EFFECTS OF AZA GROUPS IN THE NH ACIDITY OF AMINOAZINES AND THE CH ACIDITY OF ACETYLAZINES

The pK values for a series of aminoazines and acetylazines containing one, two, or three aza groups in the ring were determined in dimethyl sulfoxide.There is a good linear correlation between pK values of the investigated NH and CH acids.The acidifying effects (ΔpK) of the aza groups at positions 2, 3, or 4 in relation to the side chain were determined and had values of 3.1, 2.4, and 4.5 logarithmic units in the aminoazines and 3.5, 2.9 and 4.8 logarithmic units respectively in the acetylazines.Except in the case of two ortho-located aza groups the effects are additive.Compared with dimethyl sulfoxide water has a differentiating effect on the acidity of the aminoazines, and this is explained by the formation of hydrogen bonds between the molecules of the proton-donating solvent and the aza groups of the anions of the aminoazines.