4-Hydroxy-6-methylquinoline-3-carboxylic acid

Modify Date: 2026-06-30 13:26:00

4-Hydroxy-6-methylquinoline-3-carboxylic acid Structure
4-Hydroxy-6-methylquinoline-3-carboxylic acid structure
Common Name 4-Hydroxy-6-methylquinoline-3-carboxylic acid
CAS Number 35973-18-3 Molecular Weight 203.194
Density 1.4±0.1 g/cm3 Boiling Point 381.7±42.0 °C at 760 mmHg
Molecular Formula C11H9NO3 Melting Point N/A
MSDS N/A Flash Point 184.7±27.9 °C

 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name 4-Hydroxy-6-methylquinoline-3-carboxylic acid
Synonym More Synonyms

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density 1.4±0.1 g/cm3
Boiling Point 381.7±42.0 °C at 760 mmHg
Molecular Formula C11H9NO3
Molecular Weight 203.194
Flash Point 184.7±27.9 °C
Exact Mass 203.058243
PSA 70.42000
LogP 2.74
Vapour Pressure 0.0±0.9 mmHg at 25°C
Index of Refraction 1.624
InChIKey MBHYBSDKDMRZAA-UHFFFAOYSA-N
SMILES Cc1ccc2[nH]cc(C(=O)O)c(=O)c2c1

 MSDS

This table provides MSDS information including hazard classification, first‑aid, fire‑fighting, spill handling, operation and storage instructions.

Material Safety Data Sheet

Section1. Identification of the substance
Product Name: 4-Hydroxy-6-methylquinoline-3-carboxylic acid
Synonyms:

Section2. Hazards identification
Harmful by inhalation, in contact with skin, and if swallowed.

Section3. Composition/information on ingredients.
Ingredient name:4-Hydroxy-6-methylquinoline-3-carboxylic acid
CAS number:35973-18-3

Section4. First aid measures
Skin contact:Immediately wash skin with copious amounts of water for at least 15 minutes while removing
contaminated clothing and shoes. If irritation persists, seek medical attention.
Eye contact:Immediately wash skin with copious amounts of water for at least 15 minutes. Assure adequate
flushing of the eyes by separating the eyelids with fingers. If irritation persists, seek medical
attention.
Inhalation:Remove to fresh air. In severe cases or if symptoms persist, seek medical attention.
Ingestion:Wash out mouth with copious amounts of water for at least 15 minutes. Seek medical attention.

Section5. Fire fighting measures
In the event of a fire involving this material, alone or in combination with other materials, use dry
powder or carbon dioxide extinguishers. Protective clothing and self-contained breathing apparatus
should be worn.

Section6. Accidental release measures
Personal precautions: Wear suitable personal protective equipment which performs satisfactorily and meets local/state/national
standards.
Respiratory precaution:Wear approved mask/respirator
Hand precaution:Wear suitable gloves/gauntlets
Skin protection:Wear suitable protective clothing
Eye protection:Wear suitable eye protection
Methods for cleaning up: Mix with sand or similar inert absorbent material, sweep up and keep in a tightly closed container
for disposal. See section 12.
Environmental precautions: Do not allow material to enter drains or water courses.

Section7. Handling and storage
Handling:This product should be handled only by, or under the close supervision of, those properly qualified
in the handling and use of potentially hazardous chemicals, who should take into account the fire,
health and chemical hazard data given on this sheet.
Store in closed vessels.
Storage:

Section8. Exposure Controls / Personal protection
Engineering Controls: Use only in a chemical fume hood.
Personal protective equipment: Wear laboratory clothing, chemical-resistant gloves and safety goggles.
General hydiene measures: Wash thoroughly after handling. Wash contaminated clothing before reuse.

Section9. Physical and chemical properties
Appearance:Not specified
Boiling point:No data
No data
Melting point:
Flash point:No data
Density:No data
Molecular formula:C11H9NO3
Molecular weight:203.2

Section10. Stability and reactivity
Conditions to avoid: Heat, flames and sparks.
Materials to avoid: Oxidizing agents.
Possible hazardous combustion products: Carbon monoxide, nitrogen oxides.

Section11. Toxicological information
No data.

Section12. Ecological information
No data.

Section13. Disposal consideration
Arrange disposal as special waste, by licensed disposal company, in consultation with local waste
disposal authority, in accordance with national and regional regulations.

Section14. Transportation information
Non-harzardous for air and ground transportation.

Section15. Regulatory information
No chemicals in this material are subject to the reporting requirements of SARA Title III, Section
302, or have known CAS numbers that exceed the threshold reporting levels established by SARA
Title III, Section 313.


SECTION 16 - ADDITIONAL INFORMATION
N/A

 Safety Information

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

HS Code 2933499090

 Synthetic Route

This table presents publicly reported synthetic routes, reaction conditions, reactants and product information of the compound.

~%

4-Hydroxy-6-methylquinoline-3-carboxylic acid Structure

4-Hydroxy-6-met...

CAS#:35973-18-3

Learn More
Literature: Journal of the Chemical Society, , p. 893

~%

4-Hydroxy-6-methylquinoline-3-carboxylic acid Structure

4-Hydroxy-6-met...

CAS#:35973-18-3

Learn More
Literature: Chemical and Pharmaceutical Bulletin, , vol. 55, # 5 p. 821 - 824

~%

4-Hydroxy-6-methylquinoline-3-carboxylic acid Structure

4-Hydroxy-6-met...

CAS#:35973-18-3

Learn More
Literature: Journal of the Chemical Society, , p. 893

 Precursor & DownStream

This table lists upstream starting materials and downstream derivative products related to this chemical.

Precursor  3

DownStream  0

 Customs

This table shows customs‑related data including HS‑code, tariff and regulatory conditions for import and export.

HS Code 2933499090
Summary 2933499090. other compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

4-Hydroxy-6-methyl-quinoline-3-carboxylic acid
6-methyl-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
6-Methyl-4-oxo-1,4-dihydro-3-quinolinecarboxylic acid
4-Hydroxy-6-methylquinoline-3-carboxylic acid

  | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What is the boiling point of 4-Hydroxy-6-methylquinoline-3-carboxylic acid?
A: Boiling point of 4-Hydroxy-6-methylquinoline-3-carboxylic acid is 381.7±42.0 °C at 760 mmHg.
Q: What is the molecular weight of 4-Hydroxy-6-methylquinoline-3-carboxylic acid?
A: Molecular weight of 4-Hydroxy-6-methylquinoline-3-carboxylic acid is 203.194.
Q: What is the LogP of 4-Hydroxy-6-methylquinoline-3-carboxylic acid?
A: LogP of 4-Hydroxy-6-methylquinoline-3-carboxylic acid is 2.74.
Q: What is the polar surface area (PSA) of 4-Hydroxy-6-methylquinoline-3-carboxylic acid?
A: Polar surface area (PSA) of 4-Hydroxy-6-methylquinoline-3-carboxylic acid is 70.42000.
Q: What are the upstream materials of 4-Hydroxy-6-methylquinoline-3-carboxylic acid?
A: Related upstream materials(CAS) of 4-Hydroxy-6-methylquinoline-3-carboxylic acid: 85418-82-2;106-49-0;19056-84-9.
Q: What is the SMILES notation of 4-Hydroxy-6-methylquinoline-3-carboxylic acid?
A: SMILES notation of 4-Hydroxy-6-methylquinoline-3-carboxylic acid is Cc1ccc2[nH]cc(C(=O)O)c(=O)c2c1.
Q: What is the CAS number of 4-Hydroxy-6-methylquinoline-3-carboxylic acid?
A: CAS number of 4-Hydroxy-6-methylquinoline-3-carboxylic acid is 35973-18-3.
Q: What English synonyms does 4-Hydroxy-6-methylquinoline-3-carboxylic acid have?
A: English synonyms of 4-Hydroxy-6-methylquinoline-3-carboxylic acid: 4-Hydroxy-6-methyl-quinoline-3-carboxylic acid, 6-methyl-4-oxo-1,4-dihydroquinoline-3-carboxylic acid, 6-Methyl-4-oxo-1,4-dihydro-3-quinolinecarboxylic acid, 4-Hydroxy-6-methylquinoline-3-carboxylic acid.
Q: What is the InChIKey of 4-Hydroxy-6-methylquinoline-3-carboxylic acid?
A: InChIKey of 4-Hydroxy-6-methylquinoline-3-carboxylic acid is MBHYBSDKDMRZAA-UHFFFAOYSA-N.
Q: What is the English name of 4-Hydroxy-6-methylquinoline-3-carboxylic acid?
A: The English name of 4-Hydroxy-6-methylquinoline-3-carboxylic acid is 4-Hydroxy-6-methylquinoline-3-carboxylic acid.

 factory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
Dayang Chem (Hangzhou) Co., Ltd.
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