4-Hydroxypyridine-3-sulfonic Acid

CAS Number: 51498-37-4

Molecular Formula: C5H5NO4S

Purity: 4-Hydroxypyridine-3-sulfonic Acid 98% purity

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About 4-Hydroxypyridine-3-sulfonic Acid

4-Hydroxypyridine-3-sulfonic acid (CAS 51498-37-4) acts as a pivotal building block within the API intermediates market, primarily utilized for the synthesis of Torsemide and other pyridine-based diuretics where high purity fine chemicals (Pharma/API purity 99% | General Industry purity 98%) are essential for meeting s...

4-Hydroxypyridine-3-sulfonic Acid Specifications

CAS Number

51498-37-4

Molecular Formula

C5H5NO4S

Molecular Weight

175.16 g/mol

IUPAC Name

4-oxo-1H-pyridine-3-sulfonic acid

Canonical SMILES

C1=CNC=C(C1=O)S(=O)(=O)O

InChI Key

AZRCSTMIVMQIPR-UHFFFAOYSA-N

InChI

1S/C5H5NO4S/c7-4-1-2-6-3-5(4)11(8,9)10/h1-3H,(H,6,7)(H,8,9,10)

PubChem CID

3016673

EINECS Number

257-243-2

MDL Number

MFCD02093473

HSN No

2933399200

CAS Number

51498-37-4

Molecular Formula

C5H5NO4S

Molecular Weight

175.16 g/mol

IUPAC Name

4-oxo-1H-pyridine-3-sulfonic acid

Canonical SMILES

C1=CNC=C(C1=O)S(=O)(=O)O

InChI Key

AZRCSTMIVMQIPR-UHFFFAOYSA-N

InChI

1S/C5H5NO4S/c7-4-1-2-6-3-5(4)11(8,9)10/h1-3H,(H,6,7)(H,8,9,10)

PubChem CID

3016673

EINECS Number

257-243-2

MDL Number

MFCD02093473

HSN No

2933399200

Molecular Weight

175.16 g/mol

Purity

4-Hydroxypyridine-3-sulfonic Acid 98% purity

Melting Point

300°C

Boiling Point

497.8±45.0 °C (Predicted)

Freezing point

300°C

Flash Point

100°C

Density

1.686 g/cm3

pKa

1.5, -2.30±0.33

Precise Quality

51498-37-4

PSA

91.8 Å²

logP

-0.4

Average mass

175.16 g/mol

Monoisotopic mass

174.99392881 Da

Molar mass

175.16 g/mol

Vapour pressure

Precautionary Statement Codes

P260, P264, P264+P265, P280, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P351+P338, P305+P354+P338, P316, P317, P321, P332+P317, P337+P317, P362+P364, P363, P405, and P501

Hazard Classes and Categories

Skin Corr. 1B (63.6%) Skin Irrit. 2 (18.2%)

Pharmaceutical Intermediate

A valuable synthetic intermediate used in the manufacturing of the loop diuretic Torsemide and in the preparation of (arylpiperazinyl)cyclohexylsulfonamides as potential alpha-1-adrenergic receptor antagonists

Organic Synthesis Building Block

A functionalized pyridine derivative and organosulfur compound utilized as a catalyst in organic syntheses and as a precursor for 4-methoxy-3-pyridinesulfonyl chloride

Chemical Reagent

An effective proton-shunting agent and ion-exchange resin used in analytical chemistry and crystallographic data collection

Industrial Chemical

A versatile starting material employed in the production of detergents, water-soluble dyes, and various catalysts for industrial research and development.