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2-ETHYNYLPYRIDINE

2-ETHYNYLPYRIDINE structure

CAS No.: 1945-84-2

Chemical Name:: 2-ETHYNYLPYRIDINE

Synonyms: 2-EthynyL;ethynylpyridine;2-ETHYNYLPYRIDINE;p-Ethylnylpyridine;2-PYRIDYLACETYLENE;TIMTEC-BB SBB006619;2-ETHYLNYL PYRIDINE;Pyridine, 2-ethynyl-;2-Pyridinylacetylene;2-Ethynylpyridine>

CBNumber:: CB5680472

Molecular Formula:: C7H5N

Molecular Weight:: 103.12

MDL Number:: MFCD00041598

MOL File:: 1945-84-2.mol

MSDS File:: SDS

Last updated:2026-01-13 11:25:03

Product description	Number	Pack Size	Price
2-Ethynylpyridine 98%	469920	1g	$43.91
2-Ethynylpyridine 98%	469920	5g	$149
2-Ethynylpyridine >97.0%(GC)	E0340	1mL	$36
2-Ethynylpyridine >97.0%(GC)	E0340	5mL	$126
2-ETHYNYLPYRIDINE,98+%	81472	25g	$462.71
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2-ETHYNYLPYRIDINE Properties

Melting point	77-78 C
Boiling point	85 °C/12 mmHg (lit.)
Density	1.021 g/mL at 25 °C (lit.)
refractive index	n20/D 1.56(lit.)
Flash point	170 °F
storage temp.	2-8°C
pka	2.31±0.12(Predicted)
form	Liquid
color	Clear dark brown
Specific Gravity	1.021
Water Solubility	Soluble in water.
BRN	1098904
InChI	InChI=1S/C7H5N/c1-2-7-5-3-4-6-8-7/h1,3-6H
InChIKey	NHUBNHMFXQNNMV-UHFFFAOYSA-N
SMILES	C1(C#C)=NC=CC=C1
CAS DataBase Reference	1945-84-2(CAS DataBase Reference)
UNSPSC Code	12352100
NACRES	NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS07

Signal word

Warning

Hazard statements

H315-H319-H335

Precautionary statements

P261-P264-P271-P280-P302+P352-P305+P351+P338

target organs

Respiratory system

PPE

Eyeshields, Gloves, type ABEK (EN14387) respirator filter

Hazard Codes

Risk Statements

36/37/38

Safety Statements

26-36-37/39

WGK Germany

HS Code

29339900

Storage Class

10 - Combustible liquids

Hazard Classifications

Eye Irrit. 2
Skin Irrit. 2
STOT SE 3

NFPA 704

	2
1		0

2-ETHYNYLPYRIDINE price More Price(41)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	469920	2-Ethynylpyridine 98%	1945-84-2	1g	$43.91	2025-07-31	Buy
Sigma-Aldrich	469920	2-Ethynylpyridine 98%	1945-84-2	5g	$149	2025-07-31	Buy
TCI Chemical	E0340	2-Ethynylpyridine >97.0%(GC)	1945-84-2	1mL	$36	2025-07-31	Buy
TCI Chemical	E0340	2-Ethynylpyridine >97.0%(GC)	1945-84-2	5mL	$126	2025-07-31	Buy
GFS CHEMICALS	81472	2-ETHYNYLPYRIDINE,98+%	1945-84-2	25g	$462.71	2021-12-16	Buy

Product number	Packaging	Price	Buy
469920	1g	$43.91	Buy
469920	5g	$149	Buy
E0340	1mL	$36	Buy
E0340	5mL	$126	Buy
81472	25g	$462.71	Buy

2-ETHYNYLPYRIDINE Chemical Properties,Uses,Production

Uses

2-ETHYNYLPYRIDINE is a useful research chemical.

Chemical Properties

clear dark brown liquid

Uses

2-Ethynylpyridine is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff fields.

Synthesis Reference(s)

Synthesis, p. 364, 1981 DOI: 10.1055/s-1981-29448

General Description

2-Ethynylpyridine is a pyridine derivative.

Synthesis

86521-05-3

1945-84-2

The general procedure for the synthesis of 2-ethynylpyridine from 2-pyridynyltrimethylsilane was as follows: 2-((trimethylmethylsilyl)ethynyl)pyridine (175 mg, 1.0 mmol) was dissolved in a mixed solvent of methanol/dichloromethane (2 mL/1 mL). The reaction system was cooled to 0 °C and potassium hydroxide (112 mg, 2.0 mmol) was subsequently added. After stirring the reaction mixture for 0.5 h at 0 °C, the reaction was quenched with deionized water. The reaction mixture was extracted with dichloromethane (2 x 3 mL) and the organic phases were combined. The organic phase was dried with anhydrous sodium sulfate, filtered and concentrated under reduced pressure to give the target product 2-ethynylpyridine (80 mg, 80% yield).

References

[1] Angewandte Chemie - International Edition, 2015, vol. 54, # 27, p. 7949 - 7953
[2] Angew. Chem., 2015, vol. 127, # 27, p. 8060 - 8064,5
[3] Canadian Journal of Chemistry, 2005, vol. 83, # 6-7, p. 716 - 727
[4] Dalton Transactions, 2016, vol. 45, # 25, p. 10209 - 10221
[5] Phosphorus, Sulfur and Silicon and Related Elements, 2002, vol. 177, # 5, p. 1041 - 1045

2-ETHYNYLPYRIDINE synthesis

Synthesis of 2-ETHYNYLPYRIDINE from 2-Bromopyridine

2-ETHYNYLPYRIDINE Preparation Products And Raw materials

Raw materials

2-(TRIMETHYLSILYLETHYNYL)PYRIDINE 2-Pyridinecarboxaldehyde Dimethyl (1-Diazo-2-oxopropyl)phosphonate Potassium hydroxide Methanol

Dichloromethane

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Preparation Products

DI-N-OCTADECYL DISULFIDE 2-PYRIDIN-2-YL-1H-INDOLE 2-ACETAMIDOPYRIDINE 2-Vinylpyridine 2-(3-(Piperidin-1-yl)prop-1-yn-1-yl)pyridine

2-((1,3-Dioxolan-2-yl)methyl)pyridine methyl 3-(2-Pyridyl)propiolate 2-(Pyridin-2-ylethynyl)aniline 1-(2-PYRIDYL)-2-(2-NITROBENZYL)ALKYNE

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2-ETHYNYLPYRIDINE Suppliers

Global( 259)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
HANGZHOU LEAP CHEM CO., LTD.	+86-571-87711850	market18@leapchem.com	China	24597	58
Nanjing ChemLin Chemical Industry Co., Ltd.	025-83697070	product@chemlin.com.cn	CHINA	3009	60
career henan chemical co	+86-0371-86658258 +8613203830695	sales@coreychem.com	China	29830	58
Accela ChemBio Inc.	+1-858-6993322	info@accelachem.com	United States	21193	58
Shandong chuangyingchemical Co., Ltd.	18853181302	sale@chuangyingchem.com	CHINA	5906	58
Alchem Pharmtech,Inc.	8485655694	sales@alchempharmtech.com	United States	63687	58
CONIER CHEM AND PHARMA LIMITED	+8618523575427	sales@conier.com	China	49977	58
Antai Fine Chemical Technology Co.,Limited	18503026267	info@antaichem.com	CHINA	9636	58
Guangzhou Yuheng Pharmaceutical Technology Co., Ltd	+8613580539051	joe@yuhengpharm.com	CHINA	21142	58
Neostar United (Changzhou) Industrial Co., Ltd.	+86-0519-85551759 +8613506123987	marketing1@neostarunited.com	China	8830	58

Supplier	Advantage
HANGZHOU LEAP CHEM CO., LTD.	58
Nanjing ChemLin Chemical Industry Co., Ltd.	60
career henan chemical co	58
Accela ChemBio Inc.	58
Shandong chuangyingchemical Co., Ltd.	58
Alchem Pharmtech,Inc.	58
CONIER CHEM AND PHARMA LIMITED	58
Antai Fine Chemical Technology Co.,Limited	58
Guangzhou Yuheng Pharmaceutical Technology Co., Ltd	58
Neostar United (Changzhou) Industrial Co., Ltd.	58

View Lastest Price from 2-ETHYNYLPYRIDINE manufacturers

Image	Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
	2025-11-18	2-ETHYNYLPYRIDINE 1945-84-2	US $1.10 / g	1g	99.00%	100 Tons Min	Dideu Industries Group Limited
	2019-07-06	2-ETHYNYLPYRIDINE 1945-84-2	US $1.00 / KG	1KG	98%	1kg,5kg,100kg	Career Henan Chemical Co

2-ETHYNYLPYRIDINE
1945-84-2
US $1.10 / g
99.00%
Dideu Industries Group Limited

2-ETHYNYLPYRIDINE
1945-84-2
US $1.00 / KG
98%
Career Henan Chemical Co

2-ETHYNYLPYRIDINE Spectrum

2-ETHYNYLPYRIDINE(1945-84-2)¹HNMR

1945-84-2(2-ETHYNYLPYRIDINE)Related Search:

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PYRIDINE，3-CHLORO-5-ETHYNYL 4-Ethynylpyridine HCl,4-Ethynylpyridine hychloride 3-BROMO-5-(2-TRIMETHYLSILYL)ETHYNYL)PYRIDINE 3-ETHYNYLPYRIDINE 4-(Trimethlysilyl-ethynyl)pyridine

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2-Ethynylpyridine ,97% 2-ETHYNYLPYRIDINE, 98+% 1-(2-Pyridinyl)ethyne 2-Pyridinylacetylene 2-EthynyL 2-ETHYNYLPYRIDINE, 98+%2-ETHYNYLPYRIDINE, 98+%2-ETHYNYLPYRIDINE, 98+%2-ETHYNYLPYRIDINE, 98+% p-Ethylnylpyridine (Pyridin-2-yl)acetylene 2-Ethynylpyridine 98% 2-Ethynylpyridine, 98%, stabilized Pyridine, 2-ethynyl- 2-Ethynylpyridine, stabilized with 0.01% hydroquinone TIMTEC-BB SBB006619 2-PYRIDYLACETYLENE 2-ETHYLNYL PYRIDINE 2-ETHYNYLPYRIDINE 2-ETHYNYLPYRIDINE STABILIZED 98% 2-ETHYNYLPYRIDINE, 98%, STAB. WITH 0.01% HYDROQUINONE 2-ETHYNYLPYRIDINE INHIBITED WITH 01% HYDROQUINONE Pyridine, 2-ethynyl- (6CI, 7CI, 8CI, 9CI) 2-ETHYNYLPYRIDINE, 98+% Inhibited with 0.01% hydroquinone. Not o 2-Ethynylpyridine, 98%, Inhibited with 0.01% hydroquine 2-Ethynylpyridine, 97%, for synthesis 2-Ethynylpyridine> 2-ETHYNYLPYRIDINE ISO 9001：2015 REACH ethynylpyridine 2-Ethynylpyridine - [E12434] 1945-84-2 C5H4NCCH Functionalized Acetylenes Acetylenes Pyridines Heterocyclic Building Blocks C7 and C8 Building Blocks C7 and C8 Heterocyclic Building Blocks Pyridines Heterocycle-Pyridine series Acetylenes Functionalized Acetylenes Pyridine Heterocyclic Compounds