5-Methyl-4-isoxazolecarboxylic acid

About This Item

Molecular Formula	C₅H₅NO₃
CAS Number	42831-50-5

FC-0344999

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Properties

Chemical Identifiers

IUPAC Name	5-methyl-1,2-oxazole-4-carboxylic acid
SMILES	CC1=C(C=NO1)C(=O)O
InChI Key	VQBXUKGMJCPBMF-UHFFFAOYSA-M
InChI	InChI=1S/C5H5NO3/c1-3-4(5(7)8)2-6-9-3/h2H,1H3,(H,7,8)/p-1

Physical Properties

Boiling Point	308.3±22.0 °C at 760 mmHg
Melting Point	144-148 °C(lit.)
Flash Point	140.3±22.3 °C
Density	1.3±0.1 g/cm3

Safety Information

Hazard Class

Danger

Flash Point

140.3±22.3 °C

Please refer to the Safety Data Sheet (SDS) for complete handling, storage, and disposal instructions. Follow all applicable regulations when working with this chemical reagent.