Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H301Toxic if swallowed
Sourcing 3-Methyl-5-isoxazolecarboxylic acid?
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Methyl 5-methylisoxazole-3-carboxylate
pharmaceutical intermediate
Sourcing 3-Methyl-5-isoxazolecarboxylic acid?
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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.
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.
The international HS code for 3-Methyl-5-isoxazolecarboxylic acid (CAS 3405-77-4) is 2934.99.
2934.99
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.
5-methyl-1,2-oxazole-3-carboxylic acid
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CC1=CC(=NO1)C(=O)O