2-Butynoic acid

About 2-Butynoic acid

2-Butynoic acid is a high-purity reference standard of Genernal carrying the CAS registry number 590-93-2. Its molecular formula is C4H4O2 and its molecular weight is 84.07 g/mol. Its systematic (IUPAC) name is but-2-ynoic acid. Alternative names: Tetrolic acid and 1-Propynecarboxylic acid.

It is supplied as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. The GHS classification uses the signal word “Danger”, so appropriate gloves, eye protection and ventilation are recommended.

Laboratories use this Genernal standard for identity and assay testing, system suitability checks and method validation supporting ANDA and DMF filings. Our customers for this product work in pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Identification & assay
Method development & validation
QC reference material
Molecular biology workflows

Industries

Related to Genernal

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

Genernal impurities

Specifications & identifiers

Chemical identifiers
Product name	2-Butynoic acid
Catalogue No.	VQ-031845
CAS Number	590-93-2
IUPAC name	but-2-ynoic acid
Molecular formula	C₄H₄O₂
Molecular weight	84.07 g/mol
Exact mass	84.0211
Grade	Reference Standard
HSN code	38229090
InChIKey	LUEHNHVFDCZTGL-UHFFFAOYSA-N
SMILES	CC#CC(=O)O
PubChem CID	68535

Physical properties
Physical form	Solid
LogP (XLogP3)	0.8
H-bond donors / acceptors	1 / 2
TPSA	37.3 Å²
Synonyms	Tetrolic acid, 1-Propynecarboxylic acid, 3-Methylpropiolic acid, butynoic acid, 2-butynic acid, 2-butylnoic acid, TetrolsA currencyure, propinecarboxylic acid, propynecarboxylic acid, small carboxylic acid 15

Safety & hazard information (GHS)

Corrosive

Signal word: Danger

Hazard statements

H314Causes severe skin burns and eye damage
H318Causes serious eye damage

Precautionary statements: P260, P264, P264 + P265, P280, P301 + P330 + P331, P302 + P361 + P354, P304 + P340, P305 + P354 + P338, P316, P317, P321, P363, 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 2-Butynoic acid?

The CAS Registry Number of 2-Butynoic acid is 590-93-2. It is also known as Tetrolic acid, 1-Propynecarboxylic acid, 3-Methylpropiolic acid.

What is the molecular formula and molecular weight of 2-Butynoic acid?

2-Butynoic acid has the molecular formula C4H4O2 and a molecular weight of 84.07 g/mol. Its IUPAC name is but-2-ynoic acid.

What is 2-Butynoic acid used for?

2-Butynoic acid is supplied as a characterised reference material related to Genernal. 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 2-Butynoic acid can I order?

We supply 2-Butynoic acid in Reference Standard grade, 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 2-Butynoic acid?

Yes. Every lot of 2-Butynoic 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 2-Butynoic acid be shipped internationally?

Yes. 2-Butynoic acid 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.