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244376

Sigma-Aldrich

5-Chloro-1-pentyne

98%

Synonym(s):

(3-Chloropropyl)acetylene, 1-Chloro-4-pentyne, 4-Pentynyl chloride

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About This Item

Linear Formula:
HC≡CCH2CH2CH2Cl
CAS Number:
14267-92-6
Molecular Weight:
102.56
Beilstein:
1736710
EC Number:
238-159-5
MDL number:
MFCD00001014
UNSPSC Code:
12352100
PubChem Substance ID:
24854670
NACRES:
NA.22

Quality Level

100

Assay

98%

form

liquid

refractive index

n20/D 1.444 (lit.)

bp

67-69 °C/145 mmHg (lit.)

density

0.968 g/mL at 25 °C (lit.)

storage temp.

2-8°C

SMILES string

ClCCCC#C

InChI

1S/C5H7Cl/c1-2-3-4-5-6/h1H,3-5H2

InChI key

UXFIKVWAAMKFQE-UHFFFAOYSA-N

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Application

5-Chloro-1-pentyne was used in the synthesis of 5-chloro-2-trimethylstannyl-1-pentene by reacting with Me3SnCu.Me2S. It was also used with α-diazoesters in a copper-catalyzed synthesis of pyrazoles.

Pictograms

FlameExclamation mark
GHS02,GHS07

Signal Word

Danger

Hazard Statements

H225,H315

Precautionary Statements

P210 - P302 + P352

Hazard Classifications

Flam. Liq. 2 - Skin Irrit. 2

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

59.0 °F - closed cup

Flash Point(C)

15 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

FSL

Group 4: Flammable liquids
Type 1 petroleums
Hazardous rank II
Water insoluble liquid

JAN Code

244376-VAR:
244376-BULK:
244376-25G:
244376-5G:

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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Copper-promoted cycloaddition of diazocarbonyl compounds and acetylides.
Xiangbing Qi et al.
Angewandte Chemie (International ed. in English), 46(18), 3242-3244 (2007-03-23)
Piers E, et al.
Canadian Journal of Chemistry, 71(3), 280-286 (1993)
Kendra Sorroza-Martínez et al.
Molecules (Basel, Switzerland), 25(18) (2020-09-10)
A new class of phosphorus dendritic compounds (PDCs) having a cyclotriphosphazene (P3N3) core and decorated with six β-cyclodextrin (βCD) units, named P3N3-[O-C6H4-O-(CH2)n-βCD]6, where n = 3 or 4 was designed, and the synthesis was performed using copper (I) catalyzed alkyne-azide

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