Torasemide EP Impurity B

Name: Torasemide EP Impurity B
Brand: Vaqora Chemicals
SKU: VQ-023921

About Torasemide EP Impurity B

Vaqora Chemicals supplies Torasemide EP Impurity B, a pharmacopeial impurity of Torasemide registered under CAS number 72811-73-5. Formula C12H13N3O2S, molecular weight 263.32 g/mol. Systematically, it is named 4-(3-methylanilino)pyridine-3-sulfonamide. It is also known as Torsemide Impurity B or Torasemide - Impurity B.

The product is provided as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. It carries the GHS signal word “Warning” with 3 hazard statements. Review the Safety Data Sheet before use.

As a characterised impurity of Torasemide, 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.

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 Torasemide

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

Torasemide impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Torasemide EP Impurity B
Catalogue No.	VQ-023921
CAS Number	72811-73-5
IUPAC name	4-(3-methylanilino)pyridine-3-sulfonamide
Molecular formula	C₁₂H₁₃N₃O₂S
Molecular weight	263.32 g/mol
Exact mass	263.0728
Grade	Reference Standard
HSN code	38229090
InChIKey	ZXPCUGWAKUIOOF-UHFFFAOYSA-N
SMILES	CC1=CC(=CC=C1)NC2=C(C=NC=C2)S(=O)(=O)N
PubChem CID	819349

Physical properties
Physical form	Solid
LogP (XLogP3)	1.9
H-bond donors / acceptors	2 / 5
TPSA	93.5 Å²
Synonyms	Torsemide Impurity B, Torasemide - Impurity B, 4-(3'-methylphenyl)amino-3-pyridinesulfonamide, 4-[(3-Methylphenyl)amino]-3-pyridinesulfonamide, 3-Sulfonamido-4-(3-methylanilino)pyridine, 4-((3-Methylphenyl)amino)-3-pyridinesulfonamide, 3-Pyridinesulfonamide, 4-((3-methylphenyl)amino)-, 3-Pyridinesulfonamide, 4-[(3-methylphenyl)amino]-, 4-(m-Tolylamino)pyridine-3-sulfonamide, 4-(3-Methylphenyl)Amino-3-Pyridinesulfonamide, 4-[(3-methylphenyl)amino]pyridine-3-sulfonamide, 4-(3-Methylphenyl)amino-3-Pyridine Sulfonamide

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 Torasemide EP Impurity B?

The CAS Registry Number of Torasemide EP Impurity B is 72811-73-5. It is also known as Torsemide Impurity B, Torasemide - Impurity B, 4-(3'-methylphenyl)amino-3-pyridinesulfonamide.

What is the molecular formula and molecular weight of Torasemide EP Impurity B?

Torasemide EP Impurity B has the molecular formula C12H13N3O2S and a molecular weight of 263.32 g/mol. Its IUPAC name is 4-(3-methylanilino)pyridine-3-sulfonamide.

What is Torasemide EP Impurity B used for?

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

We supply Torasemide EP Impurity B 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 Torasemide EP Impurity B?

Yes. Every lot of Torasemide EP Impurity B 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 Torasemide EP Impurity B be shipped internationally?

Yes. Torasemide EP Impurity B 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.