Citraconic acid

Name: Citraconic acid
Brand: Vaqora Chemicals
SKU: VQ-032710

About Citraconic acid

Citraconic acid is an impurity of N methylpyrrolidone carrying the CAS registry number 498-23-7. Its molecular formula is C5H6O4 and its molecular weight is 130.1 g/mol. Its systematic (IUPAC) name is (Z)-2-methylbut-2-enedioic acid. Common synonyms include 2-methylmaleic acid and cis-Methylbutenedioic 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. It carries the GHS signal word “Warning” with 1 hazard statement. Review the Safety Data Sheet before use.

As a characterised impurity of N methylpyrrolidone, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

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

Typical applications

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Industries

Related to N methylpyrrolidone

View every impurity, metabolite and intermediate we list for N methylpyrrolidone.

N methylpyrrolidone impurities

Specifications & identifiers

Chemical identifiers
Product name	Citraconic acid
Catalogue No.	VQ-032710
CAS Number	498-23-7
IUPAC name	(Z)-2-methylbut-2-enedioic acid
Molecular formula	C₅H₆O₄
Molecular weight	130.1 g/mol
Exact mass	130.0266
Grade	Reference Standard
HSN code	38229090
InChIKey	HNEGQIOMVPPMNR-IHWYPQMZSA-N
SMILES	C/C(=C/C(=O)O)/C(=O)O
PubChem CID	643798

Physical properties
Physical form	Solid
LogP (XLogP3)	-0.1
H-bond donors / acceptors	2 / 4
TPSA	74.6 Å²
Synonyms	2-methylmaleic acid, cis-Methylbutenedioic acid, (Z)-2-Methyl-2-butenedioic acid, (2Z)-2-methylbut-2-enedioic acid, Methyl-maleinsaeure, alpha-methylmaleic acid, cis-2-methylbutenedioic acid, 2-methyl-2Z-butenedioic acid, 2-butenedioic acid, 2-methyl-, (2Z)-, Maleic acid, methyl-, 2-Methylmaleate, Kyselina citrakonova

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed

Precautionary statements: P264, P270, P301 + P317, P330, 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 Citraconic acid?

The CAS Registry Number of Citraconic acid is 498-23-7. It is also known as 2-methylmaleic acid, cis-Methylbutenedioic acid, (Z)-2-Methyl-2-butenedioic acid.

What is the molecular formula and molecular weight of Citraconic acid?

Citraconic acid has the molecular formula C5H6O4 and a molecular weight of 130.1 g/mol. Its IUPAC name is (Z)-2-methylbut-2-enedioic acid.

What is Citraconic acid used for?

Citraconic acid is supplied as a characterised reference material related to N methylpyrrolidone. 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 Citraconic acid can I order?

We supply Citraconic 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 Citraconic acid?

Yes. Every lot of Citraconic 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 Citraconic acid be shipped internationally?

Yes. Citraconic 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.