3-Chloroisoxazole-4-carboxylic acid

About 3-Chloroisoxazole-4-carboxylic acid

3-Chloroisoxazole-4-carboxylic acid is a process intermediate or related compound of Cyclosporin carrying the CAS registry number 1485967-66-5. The compound has the formula C4H2ClNO3, corresponding to a molecular weight of 147.51 g/mol. Systematically, it is named 3-chloro-1,2-oxazole-4-carboxylic acid.

The product is provided as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Handle it with standard laboratory precautions and appropriate personal protective equipment.

It is a process intermediate or related compound in the synthesis of Cyclosporin, useful for route development, impurity fate-and-purge studies and analytical method development. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

We offer 3-Chloroisoxazole-4-carboxylic acid in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

API route development
Impurity fate & purge studies
Analytical method development

Industries

Related to Cyclosporin

View every impurity, metabolite and intermediate we list for Cyclosporin.

Cyclosporin impurities

Specifications & identifiers

Chemical identifiers
Product name	3-Chloroisoxazole-4-carboxylic acid
Catalogue No.	VQ-051306
CAS Number	1485967-66-5
IUPAC name	3-chloro-1,2-oxazole-4-carboxylic acid
Molecular formula	C₄H₂ClNO₃
Molecular weight	147.51 g/mol
Exact mass	146.9723
HSN code	2933
InChIKey	AJNVBSBDIFOHKL-UHFFFAOYSA-N
SMILES	C1=C(C(=NO1)Cl)C(=O)O
PubChem CID	82417680

Physical properties
Physical form	Solid
LogP (XLogP3)	0.9
H-bond donors / acceptors	1 / 4
TPSA	63.3 Å²

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 3-Chloroisoxazole-4-carboxylic acid?

The CAS Registry Number of 3-Chloroisoxazole-4-carboxylic acid is 1485967-66-5.

What is the molecular formula and molecular weight of 3-Chloroisoxazole-4-carboxylic acid?

3-Chloroisoxazole-4-carboxylic acid has the molecular formula C4H2ClNO3 and a molecular weight of 147.51 g/mol. Its IUPAC name is 3-chloro-1,2-oxazole-4-carboxylic acid.

What is 3-Chloroisoxazole-4-carboxylic acid used for?

3-Chloroisoxazole-4-carboxylic acid is supplied as a characterised reference material related to Cyclosporin. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of 3-Chloroisoxazole-4-carboxylic acid can I order?

We supply 3-Chloroisoxazole-4-carboxylic acid, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 3-Chloroisoxazole-4-carboxylic acid?

Yes. Every lot of 3-Chloroisoxazole-4-carboxylic acid 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 3-Chloroisoxazole-4-carboxylic acid be shipped internationally?

Yes. We export 3-Chloroisoxazole-4-carboxylic acid worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.