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Impurities and reference standards

8-Hydroxyquinaldic acid

Also known as 8-hydroxyquinoline-2-carboxylic acid, 8-Hydroxy-2-quinolinecarboxylic acid, 2-Quinolinecarboxylic acid, 8-hydroxy-

CAS 1571-30-8Formula C10H7NO3Molar mass 189.17 g/molEC 626-995-7
GHS signal word: Warning. Pictograms: Harmful or irritant 13 suppliers listed
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8-Hydroxyquinaldic acid chemical structure, C10H7NO3, CAS 1571-30-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1571-30-8
Formula
C10H7NO3
Molar mass
189.17 g/mol
EC number
626-995-7
HS code
293349
Category
Impurities and reference standards

What is 8-Hydroxyquinaldic acid?

Plain description, key identifiers and synonyms

8-hydroxy-2-quinolinecarboxylic acid is a member of quinolines.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
8-hydroxyquinoline-2-carboxylic acid
CAS number
1571-30-8 CAS number cross-checked
EC number
626-995-7
Molecular formula
C10H7NO3
UNII
EBM66FCM33
MDL number
MFCD00168972
InChIKey
UHBIKXOBLZWFKM-UHFFFAOYSA-N
InChI
InChI=1S/C10H7NO3/c12-8-3-1-2-6-4-5-7(10(13)14)11-9(6)8/h1-5,12H,(H,13,14)
SMILES (canonical and isomeric)
C1=CC2=C(C(=C1)O)N=C(C=C2)C(=O)O

Synonyms

  • 8-hydroxyquinoline-2-carboxylic acid
  • 8-Hydroxy-2-quinolinecarboxylic acid
  • 2-Quinolinecarboxylic acid, 8-hydroxy-
  • Quinaldic acid, 8-hydroxy-
  • 8-hydroxyquinaldinic acid
  • Moxifloxacin Impurity 51
  • Quinolinecarboxylic acid, 8-hydroxy-
  • 4lv4
  • 5-22-05-00272 (Beilstein Handbook Reference)
  • 55088_Aldrich
  • 8-hydroxyquinolinium-2-carboxylate
  • 8-oxidanylquinoline-2-carboxylic acid
  • 8-hydroxy-quinoline-2-carboxylic acid
  • US9394254, 5 (HCA)
  • 8-Hydroxy-2-quinolinecarboxylic acid, >=98.0% (GC)

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
189.17 g/molcalc.
Exact mass
189.0426 Dacalc.
LogP (octanol/water)
1.64calc.
Topological polar surface area
70.42 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
1calc.
Heavy atoms
14calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccc2ncccc2c1

c1ccc2ncccc2c1

2 rings, 10 atoms, the Quinoline ring system.

21,766 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

8-Hydroxyquinaldic acid suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 13 suppliers
13 of 13 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

13 suppliers in 7 countries

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8-Hydroxyquinaldic acid price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code 8-Hydroxyquinaldic acid is traded under.

HS 2933.49Indicative HS code

Compounds containing in the structure a quinoline or isoquinoline ring-system (whether…

World exports in 2024
$939M
−14.6% vs 2023, imports $1.48B
2019 to 2024
Top exporters
  1. China30.1%
  2. India * partner reported16.7%
  3. Switzerland * partner reported14.1%
Top importers
  1. United Kingdom19.2%
  2. Germany16.0%
  3. Romania8.3%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for 8-Hydroxyquinaldic acid is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 8-Hydroxyquinaldic acid, based on the data on this page

What is 8-Hydroxyquinaldic acid?

8-hydroxy-2-quinolinecarboxylic acid is a member of quinolines.

What is the CAS number of 8-Hydroxyquinaldic acid?

The CAS registry number of 8-Hydroxyquinaldic acid is 1571-30-8.

What is the molecular formula and weight of 8-Hydroxyquinaldic acid?

The molecular formula of 8-Hydroxyquinaldic acid is C10H7NO3 and its molar mass is 189.17 g/mol.

Is 8-Hydroxyquinaldic acid hazardous?

8-Hydroxyquinaldic acid carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 8-Hydroxyquinaldic acid?

8-Hydroxyquinaldic acid is usually classified under HS code 293349 (Compounds containing in the structure a quinoline or isoquinoline ring-system (whether…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 8-Hydroxyquinaldic acid?

CompoundList lists 13 suppliers of 8-Hydroxyquinaldic acid in China, United States, Canada, Germany and 3 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of 8-Hydroxyquinaldic acid?

Suppliers quote 8-Hydroxyquinaldic acid on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle 8-Hydroxyquinaldic acid

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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