Isoxazole-5-carboxylic acid, 97%

Name: Isoxazole-5-carboxylic acid, 97%
Brand: Vaqora Chemicals
SKU: VQ-012688

About Isoxazole-5-carboxylic acid, 97%

Listed under CAS 21169-71-1, Isoxazole-5-carboxylic acid is a heterocyclic building block available from Vaqora Chemicals with a typical assay of 97%. The compound has the formula C4H3NO3, corresponding to a molecular weight of 113.07 g/mol. Its systematic (IUPAC) name is 1,2-oxazole-5-carboxylic acid. It is also known as 5-isoxazolecarboxylic acid or isoxazole-5-carboxylic.

It is supplied as a white to tan crystal to powder. Key physical data: a melting point of 144-148 °C. Keep the container tightly sealed and store it in a cool, dry area. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

Typical applications include organic synthesis and API synthesis. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 1 g, 5 g and 1 kg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Organic synthesis
API synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	Isoxazole-5-carboxylic acid, 97%
Catalogue No.	VQ-012688
CAS Number	21169-71-1
IUPAC name	1,2-oxazole-5-carboxylic acid
Molecular formula	C₄H₃NO₃
Molecular weight	113.07 g/mol
Exact mass	113.0113
Purity / assay	97%
HSN code	29420090
InChIKey	MIIQJAUWHSUTIT-UHFFFAOYSA-N
SMILES	C1=C(ON=C1)C(=O)O
PubChem CID	2060599

Physical properties
Physical form	Crystalline
Appearance	White to tan crystal to powder
Melting point	144-148 °C
LogP (XLogP3)	0.2
H-bond donors / acceptors	1 / 4
TPSA	63.3 Å²
Synonyms	5-isoxazolecarboxylic acid, isoxazole-5-carboxylic, isoxazole 5-carb, isoxazole 5-carboxylic acid, Isoxazole-5-carboxylic acid, 97%

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Isoxazole-5-carboxylic acid, 97%?

The CAS Registry Number of Isoxazole-5-carboxylic acid, 97% is 21169-71-1. It is also known as 5-isoxazolecarboxylic acid, isoxazole-5-carboxylic, isoxazole 5-carb.

What is the molecular formula and molecular weight of Isoxazole-5-carboxylic acid, 97%?

Isoxazole-5-carboxylic acid, 97% has the molecular formula C4H3NO3 and a molecular weight of 113.07 g/mol. Its IUPAC name is 1,2-oxazole-5-carboxylic acid.

Which grade and pack sizes of Isoxazole-5-carboxylic acid, 97% can I order?

We supply Isoxazole-5-carboxylic acid, 97% in (97%) grade, in 1 g, 5 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Isoxazole-5-carboxylic acid, 97%?

Yes. Every lot of Isoxazole-5-carboxylic acid, 97% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Isoxazole-5-carboxylic acid, 97% be shipped internationally?

Yes. Isoxazole-5-carboxylic acid, 97% is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.