Mesna EP Impurity A

About Mesna EP Impurity A

Mesna EP Impurity A is a pharmacopeial impurity of Mesna carrying the CAS registry number 25985-57-3. Its molecular formula is C3H8N2O3S2 and its molecular weight is 184.2 g/mol. The IUPAC name is 2-carbamimidoylsulfanylethanesulfonic acid. Common synonyms include Mesna - Impurity A and 2-[(Aminoiminomethyl)thio]ethanesulfonic acid.

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. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

As a characterised impurity of Mesna, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory 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

Pharmacopeial method verification
Impurity profiling
QC release testing
ANDA / DMF filings

Industries

Related to Mesna

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

Mesna impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Mesna EP Impurity A
Catalogue No.	VQ-026617
CAS Number	25985-57-3
IUPAC name	2-carbamimidoylsulfanylethanesulfonic acid
Molecular formula	C₃H₈N₂O₃S₂
Molecular weight	184.2 g/mol
Exact mass	183.9976
Grade	Reference Standard
HSN code	38229090
InChIKey	LTHWZZOUNJCHES-UHFFFAOYSA-N
SMILES	C(CS(=O)(=O)O)SC(=N)N
PubChem CID	117698

Physical properties
Physical form	Solid
LogP (XLogP3)	-0.9
H-bond donors / acceptors	3 / 5
TPSA	138 Å²
Synonyms	Mesna - Impurity A, 2-[(Aminoiminomethyl)thio]ethanesulfonic acid, 2-Sulfoethyl carbamimidothioate, Ethanesulfonic acid, 2-[(aminoiminomethyl)thio]-, Carbamimidothioic acid, 2-sulfoethyl ester, 2-(2-Sulphonatoethyl)isothiouronium, Ethanesulfonic acid, 2-((aminoiminomethyl)thio)-, 2-((Aminoiminomethyl)thio)ethanesulfonic acid, 2-(carbamimidoylthio)ethanesulfonic acid, 2-(Amidinothio)ethanesulfonic acid, 2-(2-Sulfoethyl)pseudourea, 2-(Carbaminidoylsulfanyl)ethanesulfonic Acid

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 Mesna EP Impurity A?

The CAS Registry Number of Mesna EP Impurity A is 25985-57-3. It is also known as Mesna - Impurity A, 2-[(Aminoiminomethyl)thio]ethanesulfonic acid, 2-Sulfoethyl carbamimidothioate.

What is the molecular formula and molecular weight of Mesna EP Impurity A?

Mesna EP Impurity A has the molecular formula C3H8N2O3S2 and a molecular weight of 184.2 g/mol. Its IUPAC name is 2-carbamimidoylsulfanylethanesulfonic acid.

What is Mesna EP Impurity A used for?

Mesna EP Impurity A is supplied as a characterised reference material related to Mesna. 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 Mesna EP Impurity A can I order?

We supply Mesna EP Impurity A 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 Mesna EP Impurity A?

Yes. Every lot of Mesna EP Impurity A 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 Mesna EP Impurity A be shipped internationally?

Yes. Mesna EP Impurity A 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.