Pyridine-N-oxide

Product Name: Pyridine-N-oxide
CAS No.: 694-59-7
Chemical Name: Pyridine-N-oxide
Synonyms: Pyridine oxide;PYRIDINE-1-OXIDE;pyridineoxide;Pyridin-N-oxid;Pyridne-N-Oxide;1-oxidePyridine;N- oxidopyridin;PYRIDINE-N-OXIDE;Pyridine-N-Oxidee;3-PICOLIN-N-OXIDE
CBNumber: CB6293240
Molecular Formula: C5H5NO
Formula Weight: 95.1
MOL File: 694-59-7.mol

More

Less

Pyridine-N-oxide Property

Melting point:: 62-67 °C(lit.)
Boiling point:: 270 °C(lit.)
Density: 1.1418 (rough estimate)
refractive index: 1.5939 (estimate)
Flash point:: 143 °C
storage temp.: 2-8°C
form: Crystalline Solid, Crystals, and/or Chunks
pka: 0.79(at 24℃)
color: White to brownish
Water Solubility: soluble
Sensitive: Hygroscopic
Merck: 14,7972
BRN: 105257
CAS DataBase Reference: 694-59-7(CAS DataBase Reference)
NIST Chemistry Reference: Pyridine, 1-oxide(694-59-7)
EPA Substance Registry System: Pyridine, 1-oxide (694-59-7)

More

Less

Safety

Hazard Codes: Xi,Xn
Risk Statements: 36/37/38-22-40-20/21/22
Safety Statements: 26-24/25-37/39-36/37/39-22
WGK Germany: 3
RTECS: UT6410000
F: 21
TSCA: Yes
HS Code: 29333999

More

Less

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H301Toxic if swalloed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

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

P405Store locked up.

More

Less

N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 131652
Product name: Pyridine N-oxide
Purity: 95%
Packaging: 25g
Price: $42.2
Updated: 2025/07/31

Sigma-Aldrich

Product number: 131652
Product name: Pyridine N-oxide
Purity: 95%
Packaging: 100g
Price: $97.1
Updated: 2025/07/31

TCI Chemical

Product number: P0557
Product name: Pyridine N-Oxide
Purity: >98.0%(T)
Packaging: 25g
Price: $36
Updated: 2025/07/31

TCI Chemical

Product number: P0557
Product name: Pyridine N-Oxide
Purity: >98.0%(T)
Packaging: 100g
Price: $103
Updated: 2025/07/31

TCI Chemical

Product number: P0557
Product name: Pyridine N-Oxide
Purity: >98.0%(T)
Packaging: 500g
Price: $309
Updated: 2025/07/31

More

Less

Pyridine-N-oxide Chemical Properties,Usage,Production

Chemical Properties

White to light yellow solid

Uses

Pyridine N-Oxide is a useful reagent for the chemical industry, a mild reoxidant that transforms osmium-catalyzed oxidative cyclization. A catalytic agent.

Uses

Intermediate.

Definition

ChEBI: The pyridine N-oxide derived from the parent pyridine. It is a drug metabolite of the antihypertensive agent pinacidil.

Synthesis Reference(s)

Organic Syntheses, Coll. Vol. 4, p. 828, 1963
Tetrahedron Letters, 12, p. 2807, 1971 DOI: 10.1016/S0040-4039(01)97047-9

General Description

Pyridine N-oxide axle with [2]rotaxanes was synthesized via an anion templated threading-followed-by-stoppering strategy.

Hazard

Probably flammable and toxic.

Purification Methods

Purify the N-oxide by crystallisation from Et2O and by vacuum sublimation. The picrolonate has m 182-184o. [Katritzky J Chem Soc 2407 1956, Beilstein 20 III/IV 2305, 20/5 V 217.]

Pyridine-N-oxide Preparation Products And Raw materials

Raw materials

Preparation Products

4-BENZYLOXY-2(1 H)-PYRIDONE 4-CHLORO-PYRIDINE-2-CARBONITRILE 4-Aminopyridine

More

Less

Pyridine-N-oxide Suppliers

Americas 1 Belgium 4 China 225 Czech Republic 1 Europe 3 France 1 Germany 8 India 36 Ireland 1 Italy 1 Japan 6 Slovakia 1 South Korea 1 Switzerland 2 The Netherlands 1 United Kingdom 14 United States 38 Global 344

HBCChem, Inc.

Tel: +1-510-219-6317
Fax: +1-650-486-1361
Email: sales@hbcchem.com
Country: United States
ProdList: 10648
Advantage: 60

Cato Research Chemicals Inc.

Tel: +86-020-81960175-877 4000-868-328
Email: tianwen.zhan@cato-chem.com
Country: United States
ProdList: 10404
Advantage: 58

Aladdin Scientific

Tel
Email: tp@aladdinsci.com
Country: United States
ProdList: 57505
Advantage: 58

Alfa Chemistry

Tel: --
Fax: --
Email: info@Alfa-Chemistry.com
Country: United States
ProdList: 6814
Advantage: 0

MP Biomedicals, LLC. (Division of Valiant FC Co., Ltd.)

Tel: --
Fax: --
Email: serv@mpbio.com
Country: United States
ProdList: 1854
Advantage: 58

Alichem Inc.

Tel: --
Fax: --
Email: sales@alichem.com
Country: United States
ProdList: 6167
Advantage: 58

Fluorochem Ltd.

Tel: --
Fax: --
Email: enquiries@fluorochem.co.uk
Country: United States
ProdList: 4583
Advantage: 58

Redox Scientific

Tel: --
Fax: --
Email: info@redoxsci.com
Country: United States
ProdList: 2380
Advantage: 58

TCI America, Inc. (part of Tokyo Chemical Industry)

Tel: --
Fax: --
Email: Angelina.Crew@tcichemicals.com
Country: United States
ProdList: 2053
Advantage: 58

VWR International, LLC.

Tel: --
Fax: --
Email: @sargentwelch.com
Country: United States
ProdList: 6262
Advantage: 58

Chiral Management

Tel: --
Fax: --
Email: sales@chiralmanagement.com
Country: United States
ProdList: 1332
Advantage: 30

Oakwood Products, Inc.

Tel: --
Fax: --
Email: sales@oakwoodchemical.com
Country: United States
ProdList: 6193
Advantage: 74

RIA International LLC

Tel: --
Fax: --
Email: marketing@riausa.net
Country: United States
ProdList: 1324
Advantage: 50

United States Biological

Tel: --
Fax: --
Email: chemicals@usbio.net
Country: United States
ProdList: 6214
Advantage: 80

Combi-Blocks Inc.

Tel: --
Fax: --
Email: sales@combi-blocks.com
Country: United States
ProdList: 6618
Advantage: 69

Riedel-de Haen AG

Tel: --
Fax: --
Country: United States
ProdList: 6773
Advantage: 87

TCI America

Tel: --
Fax: --
Email: sales@tciamerica.com
Country: United States
ProdList: 6909
Advantage: 75

Matrix Scientific

Tel: --
Fax: --
Email: sales@matrixscientific.com
Country: United States
ProdList: 6632
Advantage: 80

Allweys LLC

Tel: --
Fax: --
Email: sales@allweysllc.com
Country: United States
ProdList: 690
Advantage: 30

ChemContract Research Inc.

Tel: --
Fax: --
Country: United States
ProdList: 1526
Advantage: 38

Rintech, Inc.

Tel: --
Fax: --
Email: info@rintechinc.com
Country: United States
ProdList: 3416
Advantage: 60

Waterstone Technology, LLC

Tel: --
Fax: --
Email: sales@waterstonetech.com
Country: United States
ProdList: 6786
Advantage: 30

Jubilant Organosys

Tel: --
Fax: --
Email: vamsh@sh163b.sta.net.cn
Country: United States
ProdList: 191
Advantage: 76

Alfa Aesar

Tel: --
Fax: --
Email: tech@alfa.com
Country: United States
ProdList: 6814
Advantage: 81

Alkali Metals Limited

Tel: --
Fax: --
Country: United States
ProdList: 284
Advantage: 43

HONEST JOY HOLDINGS LIMITED

Tel: --
Fax: --
Email: sales@honestjoy.cn
Country: United States
ProdList: 6675
Advantage: 54

Advance Scientific & Chemical

Tel: --
Fax: --
Email: sales@advance-scientific.com
Country: United States
ProdList: 6419
Advantage: 71

2A PharmaChem USA

Tel: --
Fax: --
Email: sales@2apharmachem.com
Country: United States
ProdList: 6137
Advantage: 39

City Chemical LLC

Tel: --
Fax: --
Email: sales@citychemical.com
Country: United States
ProdList: 6708
Advantage: 72

3B Scientific Corporation

Tel: --
Fax: --
Email: sales@3bsc.com
Country: United States
ProdList: 6718
Advantage: 47

AK Scientific, Inc.

Tel: --
Fax: --
Email: sales@aksci.com
Country: United States
ProdList: 6347
Advantage: 65

Jubilant Organosys Ltd.

Tel: --
Fax: --
Email: support@jubl.com
Country: United States
ProdList: 170
Advantage: 81

Atlantic SciTech Group, Inc.

Tel: --
Fax: --
Email: sales@astginc.com
Country: United States
ProdList: 2308
Advantage: 43

Aagami, Inc.

Tel: --
Fax: --
Email: dinesh@aagami.net
Country: United States
ProdList: 557
Advantage: 42

MP Biomedicals, Inc.

Tel: --
Fax: --
Country: United States
ProdList: 6561
Advantage: 81

Pfaltz & Bauer, Inc.

Tel: --
Fax: --
Email: sales@pfaltzandbauer.com
Country: United States
ProdList: 6828
Advantage: 72

City Chemicals Corporation

Tel: --
Fax: --
Country: United States
ProdList: 6460
Advantage: 72

Beta Pharma, Inc.

Tel: --
Fax: --
Email: sales@betapharma.com
Country: United States
ProdList: 6226
Advantage: 60

More

Less

View Lastest Price from Pyridine-N-oxide manufacturers

WUHAN FORTUNA CHEMICAL CO., LTD

Product: Pyridine-N-oxide 694-59-7
Price: US $0.00/KG
Min. Order: 1KG
Purity: 98%min
Supply Ability: 30tons/month
Release date: 2023-02-08

Hebei Chuanghai Biotechnology Co., Ltd

Product: Pyridine-N-oxide 694-59-7
Price: US $0.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 10 mt
Release date: 2024-11-11

Henan Aochuang Chemical Co.,Ltd.

Product: Pyridine-N-oxide 694-59-7
Price: US $0.00-0.00/KG
Min. Order: 1KG
Purity: 98%
Supply Ability: 1ton
Release date: 2022-10-13

694-59-7, Pyridine-N-oxideRelated Search:

Pyridine-4-carboxylic acid N-oxide Pyridine hydrochloride 2,6-Pyridinedicarbonitrile 4-Pyridinesulfonamide(6CI,9CI) 2,3,5,6-Tetraaminopyridine trihydrochloride Pyridine trifluoroacetate PYRIDINE-2-THIOAMIDE 2-Pyridinesulfonamide(6CI,7CI,9CI) dimethyl pyridine-3,5-dicarboxylate METHYL ISONICOTINATE 2-Pyridinecarbaldehyde oxime PYRIDINE-2-SULFONYL FLUORIDE PYRIDINE-3,4-DICARBOXYLIC ANHYDRIDE Pyridine hydrobromide Pyridine-4-boronic acid Pyridine sulfur trioxide 4-Picoline-N-oxide Sodium Pyrithione

PYRIDINE-1-OXIDE

PYRIDINE-N-OXIDE

1-oxidePyridine

Pyridine oxide

Pyridine <i>N</i>-oxide

pyridineoxide

Pyridin-N-oxid

Pyridine-N-Oxidee

PYRIDINE-1-OXIDE 97%

Pyridne-N-Oxide

PyridineN-oxide,95%

3-PICOLIN-N-OXIDE

1-Oxidopyridin-1-ium

1-Oxylatopyridinium

Pyridine-N-oxide,98%

1$l^{5}-pyridin-1-one

Pyridine-N-oxide, 98% 100GR

Pyridine-N-oxide, 98% 25GR

PYRIDINE N-OXIDE FOR SYNTHESIS

Pyridine N-oxide 95%

N- oxidopyridin

PyridineN-Oxide&gt

Pyridine-N-oxide ISO 9001：2015 REACH

694-59-7

Heterocyclic Building Blocks

Pyridines

Building Blocks

C5

important intermediate

C5

Heterocyclic Building Blocks

Pyridines

Pyridine

K00001