Product Name

  • Name

    4-OXO-1H-CINNOLINE-3-CARBOXYLIC ACID

  • EINECS
  • CAS No. 53512-17-7
  • Density 1.56 g/cm3
  • Solubility
  • Melting Point 267-268 °C (decomp)
  • Formula C9H6N2O3
  • Boiling Point 427.6 °C at 760mmHg
  • Molecular Weight 190.158
  • Flash Point 212.4 °C
  • Transport Information
  • Appearance
  • Safety
  • Risk Codes
  • Molecular Structure Molecular Structure of 53512-17-7 (4-OXO-1H-CINNOLINE-3-CARBOXYLIC ACID)
  • Hazard Symbols
  • Synonyms 4-oxo-1H-cinnoline-3-carboxylic acid;
  • PSA 83.31000
  • LogP 1.03360

Synthetic route

4-amino-3-cinnolinecarboxylic acid
143232-59-1

4-amino-3-cinnolinecarboxylic acid

4-Hydroxy-cinnoline-3-carboxylic acid
53512-17-7

4-Hydroxy-cinnoline-3-carboxylic acid

Conditions
ConditionsYield
93.2%
ethanol
64-17-5

ethanol

4-Hydroxy-cinnoline-3-carboxylic acid
53512-17-7

4-Hydroxy-cinnoline-3-carboxylic acid

4-oxo-1,4-dihydro-cinnoline-3-carboxylic acid ethyl ester
37967-71-8

4-oxo-1,4-dihydro-cinnoline-3-carboxylic acid ethyl ester

Conditions
ConditionsYield
With hydrogenchloride for 5h;85%
4-Hydroxy-cinnoline-3-carboxylic acid
53512-17-7

4-Hydroxy-cinnoline-3-carboxylic acid

cinnolin-4-ol
875-66-1

cinnolin-4-ol

Conditions
ConditionsYield
at 200℃; for 0.25h;81.2%
benzyl bromide
100-39-0

benzyl bromide

4-Hydroxy-cinnoline-3-carboxylic acid
53512-17-7

4-Hydroxy-cinnoline-3-carboxylic acid

A

2-benzyl-4-oxo-1,4-dihydro-cinnolinium betaine
5155-71-5

2-benzyl-4-oxo-1,4-dihydro-cinnolinium betaine

B

1-benzyl-1,4-dihydro-4-oxocinnoline-3-carboxylic acid

1-benzyl-1,4-dihydro-4-oxocinnoline-3-carboxylic acid

Conditions
ConditionsYield
With sodium hydroxide for 2h;A 31.6%
B 52.3%
4-Hydroxy-cinnoline-3-carboxylic acid
53512-17-7

4-Hydroxy-cinnoline-3-carboxylic acid

1-benzyl-1,4-dihydro-4-oxocinnoline-3-carboxylic acid

1-benzyl-1,4-dihydro-4-oxocinnoline-3-carboxylic acid

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 85 percent / HCl / 5 h
2: 87.6 percent / K2CO3 / 10 h / Heating
3: 78.6 percent / 1 M NaOH / ethanol / 1 h / Heating
View Scheme
4-Hydroxy-cinnoline-3-carboxylic acid
53512-17-7

4-Hydroxy-cinnoline-3-carboxylic acid

ethyl 1-benzyl-4-oxo-1,4-dihydrocinnoline-3-carboxylate
213386-52-8

ethyl 1-benzyl-4-oxo-1,4-dihydrocinnoline-3-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 85 percent / HCl / 5 h
2: 87.6 percent / K2CO3 / 10 h / Heating
View Scheme
2-(N-methylamino)pyridine
4597-87-9

2-(N-methylamino)pyridine

ethylacetate-methanol

ethylacetate-methanol

chloroformic acid ethyl ester
541-41-3

chloroformic acid ethyl ester

4-Hydroxy-cinnoline-3-carboxylic acid
53512-17-7

4-Hydroxy-cinnoline-3-carboxylic acid

4-hydroxy-N-methyl-N-(pyridin-2-yl)-cinnoline-3-carboxamide

4-hydroxy-N-methyl-N-(pyridin-2-yl)-cinnoline-3-carboxamide

Conditions
ConditionsYield
triethylamine In dichloromethane; ethyl acetate
pyridin-3-ylamine
462-08-8

pyridin-3-ylamine

2,2,2-trichloroethyl acetate
625-24-1

2,2,2-trichloroethyl acetate

4-Hydroxy-cinnoline-3-carboxylic acid
53512-17-7

4-Hydroxy-cinnoline-3-carboxylic acid

4-hydroxy-N-(pyridin-3-yl)-cinnoline-3-carboxamide
117484-20-5

4-hydroxy-N-(pyridin-3-yl)-cinnoline-3-carboxamide

Conditions
ConditionsYield
With thionyl chloride In 1,1-dichloroethane

4-Hydroxycinnoline-3-carboxylic acid Specification

The 4-Hydroxycinnoline-3-carboxylic acid, with the CAS registry number 53512-17-7, has the IUPAC name 4-oxo-1H-cinnoline-3-carboxylic acid. Its molecular formula is C9H6N2O3 and its molecular weight is 190.16.

Other characteristics of the 4-Hydroxycinnoline-3-carboxylic acid can be summarised as followings: (1)ACD/LogP: 0.20; (2)# of Rule of 5 Violations: 0; (3)ACD/BCF (pH 5.5): 1; (4)ACD/BCF (pH 7.4): 1; (5)ACD/KOC (pH 5.5): 1; (6)ACD/KOC (pH 7.4): 1; (7)#H bond acceptors: 5; (8)#H bond donors: 2; (9)#Freely Rotating Bonds: 1; (10)Polar Surface Area: 58.97 Å2; (11)Index of Refraction: 1.71; (12)Molar Refractivity: 47.58 cm3; (13)Molar Volume: 121.7 cm3; (14)Polarizability: 18.86×10-24cm3; (15)Surface Tension: 67.4 dyne/cm; (16)Density: 1.56 g/cm3; (17)Flash Point: 212.4 °C; (18)Enthalpy of Vaporization: 71.96 kJ/mol; (19)Boiling Point: 427.6 °C at 760 mmHg; (20)Vapour Pressure: 4.5E-08 mmHg at 25°C.

You can still convert the following datas into molecular structure: 
1.SMILES: O=C\2c1c(cccc1)N/N=C/2C(=O)O
2.InChI: InChI=1/C9H6N2O3/c12-8-5-3-1-2-4-6(5)10-11-7(8)9(13)14/h1-4H,(H,10,12)(H,13,14)
3.InChIKey: ZIPLRYYWAXPVMG-UHFFFAOYAU

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