3-Pyridinesulfonic acid

About 3-Pyridinesulfonic acid

3-Pyridinesulfonic acid is an impurity of Vonoprazan carrying the CAS registry number 636-73-7. Its molecular formula is C5H5NO3S and its molecular weight is 159.17 g/mol. Systematically, it is named pyridine-3-sulfonic acid. Alternative names: Pyridine-3-sulphonic acid and 3-Pyridylsulfonic acid.

It is supplied 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 “Danger” with 5 hazard statements. Review the Safety Data Sheet before use.

Pharmaceutical QC and development laboratories use this impurity standard of Vonoprazan to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. It is used across pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, 3-Pyridinesulfonic acid is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

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

Industries

Related to Vonoprazan

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

Vonoprazan impurities

Specifications & identifiers

Chemical identifiers
Product name	3-Pyridinesulfonic acid
Catalogue No.	VQ-024028
CAS Number	636-73-7
IUPAC name	pyridine-3-sulfonic acid
Molecular formula	C₅H₅NO₃S
Molecular weight	159.17 g/mol
Exact mass	158.999
Grade	Reference Standard
HSN code	38229090
InChIKey	DVECLMOWYVDJRM-UHFFFAOYSA-N
SMILES	C1=CC(=CN=C1)S(=O)(=O)O
PubChem CID	69468

Physical properties
Physical form	Solid
LogP (XLogP3)	-0.4
H-bond donors / acceptors	1 / 4
TPSA	75.6 Å²
Synonyms	Pyridine-3-sulphonic acid, 3-Pyridylsulfonic acid, 3-Sulfopyridine, beta-Sulfopyridine, Ethyl 3-[(Tetrahydropyranyl)oxy]butanoate, pyridine, 3-sulpho-, pyridine-3-sulfonicacid, Pyridin-3-sulfonic acid

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Signal word: Danger

Hazard statements

H314Causes severe skin burns and eye damage
H315Causes skin irritation
H318Causes serious eye damage
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P260, P261, P264, P264 + P265, P271, P280, P301 + P330 + P331, P302 + P352, P302 + P361 + P354, P304 + P340, P305 + P351 + P338, P305 + P354 + P338, P316, P317, P319, P321, P332 + P317, P337 + P317, P362 + P364, P363, 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 3-Pyridinesulfonic acid?

The CAS Registry Number of 3-Pyridinesulfonic acid is 636-73-7. It is also known as Pyridine-3-sulphonic acid, 3-Pyridylsulfonic acid, 3-Sulfopyridine.

What is the molecular formula and molecular weight of 3-Pyridinesulfonic acid?

3-Pyridinesulfonic acid has the molecular formula C5H5NO3S and a molecular weight of 159.17 g/mol. Its IUPAC name is pyridine-3-sulfonic acid.

What is 3-Pyridinesulfonic acid used for?

3-Pyridinesulfonic acid is supplied as a characterised reference material related to Vonoprazan. 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 3-Pyridinesulfonic acid can I order?

We supply 3-Pyridinesulfonic 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 3-Pyridinesulfonic acid?

Yes. Every lot of 3-Pyridinesulfonic 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 3-Pyridinesulfonic acid be shipped internationally?

Yes. 3-Pyridinesulfonic 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.