C9H7NO
145.16 g/mol
Research ReagentWarning
4-Hydroxyquinoline
CAS611-36-9EC210-268-2
Category
Research Reagent
Compound Class
Heterocycle
Primary Use
Research Compound
4-Hydroxyquinoline is a research compound that exists as a tautomer of quinolin-4-ol, commonly referred to as 4-quinolone. It has been reported in natural sources such as Glycosmis parviflora and Glycosmis citrifolia.
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
ReferenceSame Category
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research compound
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research compound
ReferenceSame Category
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research compound
ReferenceSame Category
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CAS611168-46-8
research compound
Referencesame scaffold
7-chloroquinolin-4-ol
CAS86-99-7
Pharmaceutical intermediate or research reagent
Referencesame scaffold
5-Chloroquinolin-4-ol
CAS101774-49-6
research compound
Referencesame scaffold
Xanthurenic acid
CAS59-00-7
metabolic intermediate in tryptophan metabolism
Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for 4-Hydroxyquinoline (CAS 611-36-9) is 2933.49.
HS code (international, 6-digit)
2933.49
EU CN code (8-digit)
2933 49 90
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
1H-quinolin-4-one
InChIKey
PMZDQRJGMBOQBF-UHFFFAOYSA-N
SMILES
C1=CC=C2C(=C1)C(=O)C=CN2
Synonyms (18)
- 1,4-dihydroquinolin-4-one
- 1H-quinolin-4-one
- 1H-quinoline-4one
- 3kpu
- 4(1H)-Quinolinone
- 4(1H)-quinolone
- 4-Chinolinol
- 4-Hydroxyquatolate
- 4-Hydroxyquinoline
- 4-OXO-1,4-DIHYDROQUINOLINE
- 4-Oxoquinoline
- 4-Quinolinol
- 4-Quinolinol (8CI,9CI)
- 4-Quinolone
- Kynurine
- Quinoline, 4-hydroxy-
- quinolin-4(1H)-one
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