C5H5NO3
127.1 g/mol
Research ReagentWarning
3-Methyl-5-isoxazolecarboxylic acid
CAS3405-77-4EC225-454-9
Category
Research Reagent
Compound Class
Heterocycle
Primary Use
Research Compound
3-Methyl-5-isoxazolecarboxylic acid is a research compound featuring an isoxazole ring with a carboxylic acid substituent. It is primarily used as a laboratory reagent for chemical synthesis and crystallographic studies.
research reagentcrystallographic analysis
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
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Referencesame scaffold
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Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H301Toxic if swallowed
H302Harmful if swallowed
H312Harmful in contact with skin
H332Harmful if inhaled
H311Toxic in contact with skin
H331Toxic if inhaled
Customs Tariff Classification
The international HS code for 3-Methyl-5-isoxazolecarboxylic acid (CAS 3405-77-4) is 2934.99.
HS code (international, 6-digit)
2934.99
EU CN code (8-digit)
2934 99 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
5-methyl-1,2-oxazole-3-carboxylic acid
InChIKey
BNMPIJWVMVNSRD-UHFFFAOYSA-N
SMILES
CC1=CC(=NO1)C(=O)O
Synonyms (13)
- 3-CARBOXY-5-METHYLISOXAZOLE
- 5-carboxy-3-methylisoxazole
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