2-Ethynylpyridine - ≥98%, contains 0.01% Hydroquinone as stabilizer , CAS No.1945-84-2

CAS: 1945-84-2 Cat. No.: E106166 Molecular Weight: 103.12 EC Number: 628-748-9
AVAILABLE TO ORDER
GRADE & PURITY ≥98% contains 0.01% Hydroquinone as stabilizer
Synonyms
2-Ethynyl pyridine | EN300-96035 | E0340 | AM20061684 | 2-(ethynyl)pyridine | ethynyl pyridine | SCHEMBL211092 | 2-Pyridylacetylene | AKOS008901246 | PB17077 | Ethynylpyridine | ortho-ethynylpyridine | Pyridine, ethynyl- | InChI=1/C7H5N/c1-2-7-5-3-4-6-8-7
Storage
Store at 2-8°C,Argon charged
Shipped In
Wet ice
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Size
Status
Price
Qty
1g
E106166-1g
2
$40.90
5g
E106166-5g
3
$125.90
10g
E106166-10g
2
$236.90
25g
E106166-25g
2
$446.90
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Why this grade

≥98%, contains 0.01% Hydroquinone as stabilizer for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Store at 2-8°C,Argon charged Ships Wet ice Check lot-specific COA for exact specifications.

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Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

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Literature proof

Cited in 1 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

2-Ethynylpyridine is used in the synthesis of the self-doped ionic conjugated polymer, poly(2-ethynylpyridinimum N-benzoylsulfonate). May darken in storage with no loss in purity.

2-Ethynylpyridine has been used to synthesize:

• poly(2-ethynyl-N-iodopyridinium iodide), via in-situ uncatalyzed polymerization

• poly[2-ethynyl-N-(2-furoyl)pyridinium chloride

• poly[2-ethynyl-N-(propylsulfonate)pyridinium betaine]

• 4-(2′-pyridyl)-1,2,3-triphospholide anion, via reaction with anionic heptaphosphide clusters

• poly[N-(carboxymethyl)-2-ethynylpyridinium bromide], a new water-soluble ionic conjugated polymer

• self-doped ionic conjugated polymer, poly(2-ethynylpyridinimum N-benzoylsulfonate).

Specifications

Synonyms
2-Ethynyl pyridine | EN300-96035 | E0340 | AM20061684 | 2-(ethynyl)pyridine | ethynyl pyridine | SCHEMBL211092 | 2-Pyridylacetylene | AKOS008901246 | PB17077 | Ethynylpyridine | ortho-ethynylpyridine | Pyridine, ethynyl- | InChI=1/C7H5N/c1-2-7-5-3-4-6-8-7
Specifications & Purity
≥98%, contains 0.01% Hydroquinone as stabilizer
Storage
Store at 2-8°C, Argon charged
Shipped In
Wet ice
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥98%
Names and Identifiers
Pubchem Sid488187938
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488187938
Canonical SmilesC#CC1=CC=CC=N1
IUPAC Name2-ethynylpyridine
InChIKeyNHUBNHMFXQNNMV-UHFFFAOYSA-N
INCHI1S/C7H5N/c1-2-7-5-3-4-6-8-7/h1,3-6H
Isomeric SMILES C#CC1=CC=CC=N1
WGK Germany 3
Molecular Weight 103.12
Reaxy-Rn 1098904
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1098904&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassPyridines and derivatives
SubclassNot available
Intermediate Tree Nodes Not available
Direct ParentPyridines and derivatives
Alternative Parents Heteroaromatic compounds  Azacyclic compounds  Acetylides  Organopnictogen compounds  Organonitrogen compounds  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteromonocyclic compounds
Substituents Pyridine - Heteroaromatic compound - Acetylide - Azacycle - Organic nitrogen compound - Organopnictogen compound - Hydrocarbon derivative - Organonitrogen compound - Aromatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as pyridines and derivatives. These are compounds containing a pyridine ring, which is a six-member aromatic heterocycle which consists of one nitrogen atom and five carbon atoms.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Associated Targets(Human)
HCT-116 (91556 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Mechanisms of Action
Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

11 results found

Lot NumberCertificate TypeDateItem
I2222520Certificate of AnalysisMar 10, 2026 E106166
G23121050Certificate of AnalysisApr 02, 2025 E106166
G23121053Certificate of AnalysisApr 02, 2025 E106166
G23121059Certificate of AnalysisApr 02, 2025 E106166
G23121064Certificate of AnalysisApr 02, 2025 E106166
G23121087Certificate of AnalysisApr 02, 2025 E106166
G23121089Certificate of AnalysisApr 02, 2025 E106166
I2123168Certificate of AnalysisJun 16, 2023 E106166
I2123169Certificate of AnalysisJun 16, 2023 E106166
I2123170Certificate of AnalysisJun 16, 2023 E106166
J2016058Certificate of AnalysisAug 10, 2022 E106166

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Chemical and Physical Properties
Sensitivityair & light & heat sensitive;Hygroscopic
Refractive Index1.557-1.561
Flash Point(°F)76 °C
Flash Point(°C)76°C
Boil Point(°C)77-78°C
Molecular Weight103.120 g/mol
XLogP31.000
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count1
Rotatable Bond Count1
Exact Mass103.042 Da
Monoisotopic Mass103.042 Da
Topological Polar Surface Area12.900 Ų
Heavy Atom Count8
Formal Charge0
Complexity109.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Citations of This Product
References
1. Tianyou Chen, Wei Xiao, Zihao Wang, Pengfei Gan, Changfeng Yi, Zushun Xu.  (2021)  Pyrene-Containing Polymer-Supported Cu/TEMPO Catalytic Systems: Aromatic Stacking-Enhanced Cooperative Catalysis.  Journal of Physical Chemistry C,      [PMID:] [10.1021/acs.jpcc.1c09972]
Solution Calculators
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