Basic information
- Standard SMILES
O=c1cc[nH]c2ccccc12- InChIKey
PMZDQRJGMBOQBF-UHFFFAOYSA-N- Molecular formula
- C9H7NO
- Average molar mass
- 145.16 g/mol
- Monoisotopic mass
- 145.05276384
Overview
4-quinolone is a quinolone that is 1,4-dihydroquinoline substituted by an oxo group at position 4. It is a tautomer of a quinolin-4-ol.
Names & identifiers
- Preferred name
- 4-Hydroxyquinoline
- IUPAC
- 1H-quinolin-4-one
- English name
- 4-Quinolinol
- Molecular formula
- C9H7NO
- Molecular weight
- 145.16
Names & synonyms
Show more names
Database identifiers
- CAS
529-37-3、611-36-9- PubChem CID
- 69141
- DTXSID
DTXSID50209980- ChEMBL
CHEMBL1232567- ChEBI
CHEBI:155900- UNII
- M1O131WXFO
- EC Number
- 210-268-2
- Nikkaji
- J387.250E、J7.017C
Properties
Computed structural properties
- XLogP
- 0.6
- Topological polar surface area
- 29.1 Ų
- Hydrogen bond donors
- 1
- Hydrogen bond acceptors
- 2
- Rotatable bonds
- 0
- Heavy atoms
- 11
- Formal charge
- 0
- Complexity
- 198
Experimental & physicochemical properties
Physicochemical properties
- Melting point
- 200 · 200-202 °C(lit.)
- Boiling point
- 264.27 °C · 264.27°C (rough estimate)
- Density
- 1.1555 · 1.1555 (rough estimate)
- refractive index
- 1.45 · 1.4500 (estimate)
- storage temp.
- Sealed in dry,Room Temperature
- solubility
- Soluble in methanol.
- form
- Crystalline Powder or Needles
- pka
- 2.23 · 2.23, 11.28(at 20℃)
- color
- Light beige to yellow
- Water Solubility
- 4.8 g/L · 4.8g/L(15 ºC)
- BRN
- 1524969 · 1524969
- InChI
- 1S/C9H7NO/c11-9-5-6-10-8-4-2-1-3-7(8)9/h1-6H,(H,10,11)
- InChIKey
- PMZDQRJGMBOQBF-UHFFFAOYSA-N
- SMILES
- Oc1ccnc2ccccc12
- LogP
- 2.45 · 2.450 (est)
- CAS DataBase Reference
- 611 · 611-36-9(CAS DataBase Reference)
- EWG's Food Scores
- 1 · 1
- FDA UNII
- 1 O131WXFO · M1O131WXFO
- NIST Chemistry Reference
- 4 · 4-Quinolinol(611-36-9)
- UNSPSC Code
- 12352100 · 12352100
- NACRES
- 22 · NA.22
- Symbol(GHS)
- 7 · GHS07
- Signal word
- Warning
- Hazard statements
- 315 · H315-H319-H335
- Precautionary statements
- 261 · P261-P264-P271-P280-P302+P352-P305+P351+P338
- target organs
- Respiratory system
- PPE
- 95 · dust mask type N95 (US), Eyeshields, Gloves
- Hazard Codes
- Xi
- Risk Statements
- 36 · 36/37/38
- Safety Statements
- 26 · 26-36-37/39
- WGK Germany
- 3 · 3
- RTECS
- 4070000 · VC4070000
- HS Code
- 29334900 · 29334900
- Storage Class
- 11 · 11 - Combustible Solids
- Hazard Classifications
- 2 Skin · Eye Irrit. 2Skin Irrit. 2STOT SE 3
Safety & regulation
GHS classification
GHS Classification
Warning
H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 49 reports by companies from 8 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard information
Safety data
- PPE
- dust mask type N95 (US), Eyeshields, Gloves
- wgk
- 3
- rtecs
- VC4070000
- hs_code
- 29334900
- risk_code
- 36/37/38
- Signal word
- Warning
- Symbol(GHS)
- GHS07
- hazard_code
- Xi
- safety_code
- 26-36-37/39
- Storage Class
- 11 - Combustible Solids
- target organs
- Respiratory system
- Hazard statements
- H315-H319-H335
- Hazard Classifications
- Eye Irrit. 2Skin Irrit. 2STOT SE 3
- Precautionary statements
- P261-P264-P271-P280-P302+P352-P305+P351+P338
Chemistry & industry
Applications
Description4-Hydroxyquinoline is a quinoline alkaloid that has been found in Z. lotus honeys. It is a core component of alkyl-4-hydroxyquinoline quorum sensing molecules such as 2-heptyl-3-hydroxy-4(1H)-quinolone and 2-nonyl-3-hydroxy-4-quinolone. 4-Hydroxyquinoline has been used as a precursor in the synthesis of compounds with antibacterial activity. It has also been used as a fluorescent detection reagent for iron(III) in bovine liver samples.
Uses4-Hydroxyquinolineis is a raw material in medical research, a hydroxylated quinoline derivative with antimicrobial activity. 4-Hydroxyquinoline showed growth-inhibitory effects against intestinal bacteria. 4-Hydroxyquinoline act as sacrifi cial scavengers of the photogenerated oxygen species and has been shown to prevent the photodegradation of riboflavin.
General Description4-Quinolinol (4-quinolone) is a quinolone compound which forms the core moiety of antibacterials such as norfloxacin, nalidixic acid, ciprofloxacin and cinoxacin.
Upstream & downstream products
Downstream products
Suppliers38 total
Additional notes
DefinitionChEBI: A monohydroxyquinoline carrying a hydroxy group at position 4.
Related reactions
Linked notes
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