C9H7NO2
161.16 g/mol
Research ReagentWarning
Indole-5-carboxylic acid
CAS1670-81-1EC216-799-6
Category
Research Reagent
Compound Class
Heterocycle
Primary Use
Research Compound
Indole-5-carboxylic acid is an indolecarboxylic acid with the carboxy group located at position 5. It is a naturally occurring plant metabolite and is used as a biochemical research reagent.
biochemical research reagentused to make hybridized graphene oxide films for biosensors
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
SimilarStructure SimilarSimilarity 0.74
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SimilarStructure SimilarSimilarity 0.72
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3-[[(1S)-7-(difluoromethylsulfonyl)-2,2-difluoro-1-hydroxy-1,3-dihydroinden-4-yl]oxy]-5-fluorobenzonitrile
CAS1672662-07-5
research compound
Safety Reference
Warning
H302Harmful if swallowed
H312Harmful in contact with skin
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for Indole-5-carboxylic acid (CAS 1670-81-1) is 2933.99.
HS code (international, 6-digit)
2933.99
EU CN code (8-digit)
2933 99 80
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-indole-5-carboxylic acid
InChIKey
IENZCGNHSIMFJE-UHFFFAOYSA-N
SMILES
C1=CC2=C(C=CN2)C=C1C(=O)O
Synonyms (9)
- 4ZV
- 1H-indole-5-carboxylic acid
- 5-Carboxyindole
- 5-indolecarboxylic acid
- Indole-5-carboxylic acid
- indol-5-carboxylic acid
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