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W296600

Sigma-Aldrich

Pyridine

≥99%

Synonym(s):

Aza benzene, Azine

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About This Item

Empirical Formula (Hill Notation):
C5H5N
CAS Number:
110-86-1
Molecular Weight:
79.10
FEMA Number:
2966
Beilstein:
103233
EC Number:
203-809-9
Council of Europe no.:
604
MDL number:
MFCD00011732
UNSPSC Code:
12164502
PubChem Substance ID:
24901424
NACRES:
NA.21

biological source

synthetic

Quality Level

400

grade

Fragrance grade
Halal
Kosher

Agency

follows IFRA guidelines

reg. compliance

EU Regulation 1223/2009

vapor density

2.72 (vs air)

vapor pressure

10 mmHg ( 13.2 °C)
20 mmHg ( 25 °C)

Assay

≥99%

form

liquid

autoignition temp.

899 °F

expl. lim.

12.4 %

packaging

composite drum of 25 kg
glass bottle of 1 kg
steel drum of 10 kg

impurities

≤0.50% (water)

color

colorless

refractive index

n20/D 1.509 (lit.)

pH

8.5 (25 °C, 15.82 g/L)

bp

115 °C (lit.)

mp

−42 °C (lit.)

density

0.978 g/mL at 25 °C (lit.)

application(s)

flavors and fragrances

Documentation

see Safety & Documentation for available documents

food allergen

no known allergens

fragrance allergen

no known allergens

Organoleptic

fishy; sour

SMILES string

C1=CN=CC=C1

InChI

1S/C5H5N/c1-2-4-6-5-3-1/h1-5H

InChI key

JUJWROOIHBZHMG-UHFFFAOYSA-N

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Application


  • Reactivity and Steric Parameters from 2D to 3D Bulky Pyridines: Increasing Steric Demand at Nitrogen with Chiral Azatriptycenes.: The research explores the reactivity and steric parameters of bulky pyridines, specifically chiral azatriptycenes, which have potential applications in asymmetric catalysis and pharmaceutical chemistry (Bensaida et al., 2024).

  • Piperidine and Pyridine Series Lead-Free Dion-Jacobson Phase Tin Perovskite Single Crystals and Their Applications for Field-Effect Transistors.: The study investigates the use of piperidine and pyridine series lead-free tin perovskite single crystals in field-effect transistors, highlighting their potential in electronic and optoelectronic applications (Liao et al., 2024).

  • Synthesis, evaluation of biological activity and SAR of new thioalkyl derivatives of pyridine.: This research focuses on the synthesis and biological activity of new thioalkyl derivatives of pyridine, providing insights into their structure-activity relationships (SAR) and potential pharmaceutical applications (Sh Dashyan et al., 2024).

Disclaimer

For R&D or non-EU Food use. Not for retail sale.

Pictograms

FlameExclamation mark
GHS02,GHS07

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Irrit. 2 - Flam. Liq. 2 - Skin Irrit. 2

Storage Class Code

3 - Flammable liquids

WGK

WGK 2

Flash Point(F)

68.0 °F - closed cup

Flash Point(C)

20 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Pyridine ≥99.5% (GC)

Sigma-Aldrich

16037

Pyridine

Total syntheses of complanadines A and B.
Le Zhao et al.
Angewandte Chemie (International ed. in English), 52(6), 1722-1725 (2013-01-03)
Bobby Happ et al.
Chemical Society reviews, 41(6), 2222-2255 (2011-11-15)
Pyridine-based ligands, such as 2,2'-bipyridine and 1,10-phenanthroline, have gained much interest in the fields of supramolecular chemistry as well as materials science. The appealing optoelectronic properties of their complexes with heavy d(6) transition metal ions, such as Ru(ii), Os(II), Re(I)
Nathalie Ségaud et al.
Inorganic chemistry, 52(2), 691-700 (2013-01-11)
We report the synthesis, characterization, and solution chemistry of a series of new Fe(II) complexes based on the tetradentate ligand N-methyl-N,N'-bis(2-pyridyl-methyl)-1,2-diaminoethane or the pentadentate ones N,N',N'-tris(2-pyridyl-methyl)-1,2-diaminoethane and N,N',N'-tris(2-pyridyl-methyl)-1,3-diaminopropane, modified by propynyl or methoxyphenyltriazolyl groups on the amino functions. Six of
Ye Wei et al.
Journal of the American Chemical Society, 135(10), 3756-3759 (2013-02-27)
We describe here a [3+3]-type condensation reaction of O-acetyl ketoximes and α,β-unsaturated aldehydes that is synergistically catalyzed by a copper(I) salt and a secondary ammonium salt (or amine). This redox-neutral reaction allows modular synthesis of a variety of substituted pyridines
Jerri M Rook et al.
Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 40(3), 755-765 (2014-09-23)
Allosteric modulators of the metabotropic glutamate receptor subtype 5 (mGlu5) have exciting potential as therapeutic agents for multiple brain disorders. Translational studies with mGlu5 modulators have relied on mGlu5 allosteric site positron emission tomography (PET) radioligands to assess receptor occupancy
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