Monostearyl Maleate

Name: Monostearyl Maleate
Brand: Vaqora Chemicals
SKU: VQ-031985

About Monostearyl Maleate

Monostearyl Maleate (CAS 2424-62-6) is a high-purity reference standard of Maleic acid offered by Vaqora Chemicals. Formula C22H40O4, molecular weight 368.5 g/mol. Systematically, it is named (Z)-4-octadecoxy-4-oxobut-2-enoic acid. Alternative names: Octadecyl hydrogen maleate and 2-Butenedioic acid (2Z)-, 1-octadecyl ester.

The product is provided as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. It carries the GHS signal word “Warning” with 4 hazard statements. Review the Safety Data Sheet before use.

Laboratories use this Maleic acid standard for identity and assay testing, system suitability checks and method validation supporting ANDA and DMF filings. It is used across 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
Fine chemical synthesis

Industries

Related to Maleic acid

View every impurity, metabolite and intermediate we list for Maleic acid.

Maleic acid impurities

Specifications & identifiers

Chemical identifiers
Product name	Monostearyl Maleate
Catalogue No.	VQ-031985
CAS Number	2424-62-6
IUPAC name	(Z)-4-octadecoxy-4-oxobut-2-enoic acid
Molecular formula	C₂₂H₄₀O₄
Molecular weight	368.5 g/mol
Exact mass	368.2927
Grade	Reference Standard
HSN code	38229090
InChIKey	MHQJUHSHQGQVTM-HNENSFHCSA-N
SMILES	CCCCCCCCCCCCCCCCCCOC(=O)/C=C\C(=O)O
PubChem CID	6436905

Physical properties
Physical form	Solid
LogP (XLogP3)	8.6
H-bond donors / acceptors	1 / 4
TPSA	63.6 Å²
Synonyms	Octadecyl hydrogen maleate, 2-Butenedioic acid (2Z)-, 1-octadecyl ester, 2-Butenedioic acid (2Z)-, monooctadecyl ester, 1-Octadecyl (2Z)-2-butenedioate, octadecyl fumarate, (Z)-4-(Octadecyloxy)-4-oxobut-2-enoic acid, stearyl fumarate, maleic acid monostearyl ester, (Z)-4-octadecoxy-4-oxo-but-2-enoic acid, (Z)-4-(Octadecyloxy)-4-oxobut-2-enoicacid, (Z)-4-(Octadecyloxy)-4-oxo-2-butenoic Acid

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H332Harmful if inhaled
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P317, 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 Monostearyl Maleate?

The CAS Registry Number of Monostearyl Maleate is 2424-62-6. It is also known as Octadecyl hydrogen maleate, 2-Butenedioic acid (2Z)-, 1-octadecyl ester, 2-Butenedioic acid (2Z)-, monooctadecyl ester.

What is the molecular formula and molecular weight of Monostearyl Maleate?

Monostearyl Maleate has the molecular formula C22H40O4 and a molecular weight of 368.5 g/mol. Its IUPAC name is (Z)-4-octadecoxy-4-oxobut-2-enoic acid.

What is Monostearyl Maleate used for?

Monostearyl Maleate is supplied as a characterised reference material related to Maleic acid. 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 Monostearyl Maleate can I order?

We supply Monostearyl Maleate 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 Monostearyl Maleate?

Yes. Every lot of Monostearyl Maleate 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 Monostearyl Maleate be shipped internationally?

Yes. Monostearyl Maleate 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.