ChemicalBook > CAS DataBase List > 3-Pyridinesulfonic acid

3-Pyridinesulfonic acid

Product Name: 3-Pyridinesulfonic acid
CAS No.: 636-73-7
Chemical Name: 3-Pyridinesulfonic acid
Synonyms: PYRIDINE-3-SULFONIC ACID;P3SA;Vonoprazan-9;3-PyridinesuL;Vonoprazan-064;3-sulfopyridine;beta-sulfopyridine;TAK438 Impurity 50;3-Pyridinesulfonic;Pyridinesulfonic aci
CBNumber: CB3772948
Molecular Formula: C5H5NO3S
Formula Weight: 159.16
MOL File: 636-73-7.mol

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3-Pyridinesulfonic acid Property

Melting point:: >300 °C (lit.)
Density: 1.7130
refractive index: 1.5480 (estimate)
storage temp.: Keep in dark place,Sealed in dry,Room Temperature
form: Crystalline Powder
pka: -2.30±0.18(Predicted)
color: White to almost white
Water Solubility: soluble
Sensitive: Light Sensitive
λmax: 262nm(EtOH aq.)(lit.)
BRN: 120822
InChI: InChI=1S/C5H5NO3S/c7-10(8,9)5-2-1-3-6-4-5/h1-4H,(H,7,8,9)
InChIKey: DVECLMOWYVDJRM-UHFFFAOYSA-N
SMILES: C1=NC=CC=C1S(O)(=O)=O
CAS DataBase Reference: 636-73-7(CAS DataBase Reference)

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Safety

Hazard Codes: C
Risk Statements: 34-22
Safety Statements: 26-36/37/39-45-27
RIDADR: UN 2585 8/PG 3
WGK Germany: 3
RTECS: UT7920000
HazardClass: 8
PackingGroup: III
HS Code: 29333999

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H314Causes severe skin burns and eye damage

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P330+P331IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 82820
Product name: 3-Pyridinesulfonic acid
Purity: ≥98.0% (T)
Packaging: 25g
Price: $30
Updated: 2025/07/31

Sigma-Aldrich

Product number: 82820
Product name: 3-Pyridinesulfonic acid
Purity: ≥98.0% (T)
Packaging: 100g
Price: $114
Updated: 2025/07/31

TCI Chemical

Product number: P0658
Product name: Pyridine-3-sulfonic Acid
Purity: >98.0%(T)
Packaging: 25g
Price: $42
Updated: 2025/07/31

TRC

Product number: P992390
Product name: 3-PyridylsulfonicAcid
Packaging: 25g
Price: $65
Updated: 2021/12/16

SynQuest Laboratories

Product number: 8H64-1-30
Product name: Pyridine-3-sulfonic acid
Purity: 97%
Packaging: 100g
Price: $116
Updated: 2021/12/16

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3-Pyridinesulfonic acid Chemical Properties,Usage,Production

Chemical Properties

white to almost white crystalline powder

Uses

3-Pyridinesulfonic acid can be used in the synthesis of reaction intermediates, such as silver 3-pyridinesulfonate and 3-pyridinesulfonyl chloride.

Purification Methods

Purify the acid by recrystallisation from H2O or aqueous EtOH as needles or plates. [pKa: Evans & Brown J Org Chem 27 3127 1962, IR: Arnett & Chawla J Am Chem Soc 100 214 1978.] UV in 50% aqueous EtOH has at 208 and 262nm. The ammonium salt max has m 243o (from H2O), the sulfonyl chloride has m 133-134o (from pet ether), the amide has m 110-111o (from H2O), the hydrochloride has m >300o(dec), and the N-methyl betaine has m 130o (from H2O). [Gastel & Wibaut Recl Trav Chim Pays-Bas 53 1031 1934, McIlvain & Goese J Am Chem Soc 65 2233 1943, Machek Monatsh Chem 72 77 1938, Beilstein 22 I 616, 22 II 309, 22/7 V 552.]

3-Pyridinesulfonic acid Preparation Products And Raw materials

Raw materials

FUMING SULFURIC ACID MERCURY(II) SULFATE

Preparation Products

pyridine-3-sulfonyl chloride 3-Hydroxypyridine

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3-Pyridinesulfonic acid Suppliers

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View Lastest Price from 3-Pyridinesulfonic acid manufacturers

Shaanxi Dideu New Materials Co. Ltd

Product: 3-Pyridinesulfonic acid 636-73-7
Price: US $0.00/kg
Min. Order: 1kg
Purity: 98%
Supply Ability: 1000kg
Release date: 2025-07-05

WUHAN FORTUNA CHEMICAL CO., LTD

Product: 3-Pyridinesulfonic acid 636-73-7
Price: US $0.00/Kg/Drum
Min. Order: 1KG
Purity: 98%min
Supply Ability: 1000kgs
Release date: 2021-11-10

Hebei Chuanghai Biotechnology Co., Ltd

Product: PYRIDINE-3-SULPHONIC ACID 636-73-7
Price: US $10.00-3.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 10 mt
Release date: 2024-12-04

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3-Pyridinesulfonic acid >=98.0% (T)

Pyridine-3-sulfonic acid for synthesis

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Vonoprazan Impurity 30

TAK438 Impurity 50

beta-sulfopyridine

3-PYRIDINESULPHONIC ACID

3-PYRIDINESULFONIC ACID

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Pyridine-3-sulfonicacid,98+%

3-Pyridinesulfonic

3-PYRIDYLSULPHONICACID

3-PYRIDINESULFONIC ACID 99%

PYRIDINE-3-SULFONIC ACID PYRIDINE-3-SULFONIC ACID

-Pyridinesulfonic acid

Pyridine-3-sulphonic acid, 98+%

3-Pyridinesulfonic acid ,98%

Phridine-3-sulfonic acid

Vonoprazan-9

Pyridine-3-sulfonicAcid&gt

Voronozan impurity N

3-PyridinesuL

3-Pyridinesulfonic acid ISO 9001：2015 REACH

Pyridine-3-sulfonic acid (Vonoprazan Impurity)

Vonoprazan-064

Pyridine-3-Sulphonic Acid (P3SA) extrapure, 98%

1,2-bis(5-(2-fluorophenyl)-1H-pyrrol-3-yl)-2-hydroxyethan-1-one

3-Pyridinesulfonic acid (6CI, 7CI, 8CI, 9CI, ACI)

Vonolazan impurity 9

Vonolazan impurity 56

Rosiglitazone sodium salt

P3SA

3-Pyridinesulfonicaci

Pyridin-3-sulfonic acid

636-73-7

666-73-7

626-73-7

636-73-3

637-73-7

C5H4NO3S

C5H4NSO3H

C5H5NO3S

Building Blocks

Heterocyclic Building Blocks

Pyridines

Pyridines, Pyrimidines, Purines and Pteredines

Pyridine

Organic acids

Heterocycle-Pyridine series

bc0001

636-73-7

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