ChemicalBook > CAS DataBase List > 3(2H)-Pyridazinone

3(2H)-Pyridazinone

Product Name
3(2H)-Pyridazinone
CAS No.
504-30-3
Chemical Name
3(2H)-Pyridazinone
Synonyms
Pyridazin-3(2H)-one;PYRIDAZIN-3-OL;3-Pyridazinol;6-Pyridazinone;3-Pyridazinone;Pyridazine-3-ol;3-hydropyridazine;1H-pyridazin-6-one;2H-PYRIDAZIN-3-ONE;3(2H)-PYRIDAZINONE
CBNumber
CB6267421
Molecular Formula
C4H4N2O
Formula Weight
96.09
MOL File
504-30-3.mol
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3(2H)-Pyridazinone Property

Melting point:
98-104 °C
Boiling point:
101°C/1.5mmHg(lit.)
Density 
1.478 g/cm3
storage temp. 
Keep in dark place,Sealed in dry,Room Temperature
solubility 
DMSO (Slightly), Methanol (Slightly)
form 
Solid
pka
11.47±0.20(Predicted)
color 
Light Red to Light Brown
λmax
290nm(EtOH)(lit.)
BRN 
106974
InChI
InChI=1S/C4H4N2O/c7-4-2-1-3-5-6-4/h1-3H,(H,6,7)
InChIKey
AAILEWXSEQLMNI-UHFFFAOYSA-N
SMILES
C1(=O)NN=CC=C1
CAS DataBase Reference
504-30-3(CAS DataBase Reference)
NIST Chemistry Reference
3(2H)-pyridazinone(504-30-3)
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36/37
WGK Germany 
3
HS Code 
29339900
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

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N-Bromosuccinimide Price

TCI Chemical
Product number
P1850
Product name
3(2H)-Pyridazinone
Purity
>96.0%(GC)(T)
Packaging
5g
Price
$161
Updated
2025/07/31
TCI Chemical
Product number
P1850
Product name
3(2H)-Pyridazinone
Purity
>96.0%(GC)(T)
Packaging
25g
Price
$530
Updated
2023/06/20
TRC
Product number
P991298
Product name
Pyridazin-3(2H)-one
Packaging
500mg
Price
$70
Updated
2021/12/16
Matrix Scientific
Product number
180934
Product name
Pyridazin-3-ol
Purity
95%+
Packaging
1g
Price
$74
Updated
2021/12/16
AK Scientific
Product number
R919
Product name
Pyridazin-3(2H)-one
Packaging
25g
Price
$81
Updated
2021/12/16
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3(2H)-Pyridazinone Chemical Properties,Usage,Production

Uses

Pyridazin-3(2H)-one can be used for anti-inflammatory and analgesic drug discovery.

Synthesis

110-89-4

60-29-7

106-89-8

56872-17-4

504-30-3

56872-18-5

III. A finely ground mixture of 6-(3-allyl-4-hydroxyphenyl)-4,5-dihydro-3(2H)-pyridazinone (50 g, 0.22 mol), epichlorohydrin (200 g, 2.2 mol) and piperidine (2 g) was heated on a steam bath for 90 minutes. Upon completion of the reaction, the volatile components were removed by evaporation under reduced pressure to give a viscous oily substance. The oily substance was dissolved in dichloromethane and subsequently washed with dilute sodium hydroxide solution (500 mL) with agitation for 10 minutes. The organic phase was separated, washed with water, dried over anhydrous sodium sulfate, and the solvent was evaporated to obtain the oily substance, which gradually solidified during standing. Addition of ethanol ether to the solid afforded 6-[3-allyl-4-(2,3-epoxypropoxy)phenyl]-4,5-dihydro-3(2H)-pyridazinone (30 g, 47% yield, melting point 92.5°-95°C). The pure pyridazinone (melting point 93.5°-95°C) was further obtained by recrystallization from aqueous ethanol. The results of the elemental analyses were as follows: measured values (C, 67.41; H, 6.47; N, 9.80; M+, 286), which are in agreement with the theoretical values (C16H18N2O3: C, 67.11; H, 6.33; N, 9.79; M, 286).

References

[1] Patent: US3931177, 1976, A

3(2H)-Pyridazinone Preparation Products And Raw materials

Raw materials

Hydrazinium hydroxide solution Ethanol Palladium Mucobromic acid

Preparation Products

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View Lastest Price from 3(2H)-Pyridazinone manufacturers

Hebei Chuanghai Biotechnology Co., Ltd
Product
3(2H)-Pyridazinone 504-30-3
Price
US $12.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
500000kg
Release date
2024-10-29
Henan Fengda Chemical Co., Ltd
Product
3(2H)-Pyridazinone 504-30-3
Price
US $200.00-1.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
g-kg-tons, free sample is available
Release date
2024-01-05
Shanghai Rlavie Technology Co ltd
Product
3(2H)-Pyridazinone 504-30-3
Price
US $0.00-0.00/G
Min. Order
1G
Purity
98%min
Supply Ability
100kgs/month
Release date
2022-09-11

504-30-3, 3(2H)-PyridazinoneRelated Search:

Sulfachloropyridazine sodium Hydralazine Buprofezin Thioridazine Pymetrozine Metribuzin 4-Chloro-2-(1,1-dimethylethyl)-5-(((4-(1,1-dimethylethyl)phenyl)methyl)thio)-3(2H)-pyridazinone 1-PHENYL-4,5-DICHLORO-6-PYRIDAZONE 3-HYDROXY-1-PHENYL-6-PYRIDAZONE 4,5-DIBROMO-2-PHENYL-2,3-DIHYDROPYRIDAZIN-3-ONE 4,5-Dichloro-3(2H)-pyridazinone 4,5-DICHLORO-2-METHYLPYRIDAZIN-3-ONE 4,5-Dibromopyridazin-3-one BROMOPYRAZONE 6-Methylpyridazin-3(2H)-one Chloridazon 6-Oxo-1,6-dihydro-pyridazine-3-carboxylicacid DICLOMEZINE

  • Pyridazin-3(2H)-one
  • 2,3-Dihydropyridazine-3-one
  • Pyridazine-3-ol
  • 2H-Pyridazin-3-one 97%
  • 1H-pyridazin-6-one
  • 1H-Pyridazine-6-one
  • 2,3-dihydropyridazin-3-one
  • 3-hydropyridazine
  • 3-Pyridazinol
  • 3-Pyridazinone
  • 6-Pyridazinone
  • 2H-Pyridazin-3-one/Pyridazin-3-ol
  • 3(2H)-Pyridazinone SynonyMs Pyridazin-3(2H)-one
  • PYRIDAZIN-3-OL
  • TIMTEC-BB SBB005360
  • 3-HYDROXYPYRIDAZINE
  • 2H-PYRIDAZIN-3-ONE
  • 3(2H)-PYRIDAZINONE
  • 2H-Pyridazine-3-One
  • 3-(2H)-PYRIDAZINE-3-ONE,PYRIDAZIN-3(2H)-ONE,3(2H)-PYRIDAZINONE
  • 3(2H)-PYRIDAZINONE 97+%
  • 3(2H)-Pyridazinone&gt
  • 3(2H)-Pyridazinone ISO 9001：2015 REACH
  • 3-Hydroxy pyradizine
  • 3(2H)-Pyridazinone (6CI, 7CI, 8CI, 9CI, ACI)
  • 3(2<i>H</i>)-Pyridazinone
  • 504-30-3
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