2-Octyne

2-Octyne
Names
	Preferred IUPAC name Oct-2-yne
	Other names Amylmethylacetylene; Methylpentylacetylene
Identifiers
CAS Number	2809-67-8 ;
3D model (JSmol)	Interactive image;
ChemSpider	16791;
ECHA InfoCard	100.018.685
EC Number	220-553-3;
PubChem CID	17769;
UNII	YP28K987X2 ;
CompTox Dashboard (EPA)	DTXSID10182366 ;
	InChI InChI=1S/C8H14/c1-3-5-7-8-6-4-2/h3,5,7-8H2,1-2H3 Key: QCQALVMFTWRCFI-UHFFFAOYSA-N; InChI=1/C8H14/c1-3-5-7-8-6-4-2/h3,5,7-8H2,1-2H3 Key: QCQALVMFTWRCFI-UHFFFAOYAD;
	SMILES CC#CCCCCC;
Properties
Chemical formula	C8H14
Molar mass	110.200 g·mol−1
Density	0.759 g/mL
Boiling point	137 °C (279 °F; 410 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

2-Octyne, also known as methylpentylethin and oct-2-yne, is a type of alkyne with a triple bond at its second carbon (the '2-' indicates the location of the triple bond in the chain). Its formula is C₈H₁₄. Its density at 25 °C and otherwise stable conditions is 0.759 g/ml. The boiling point is 137 °C. The average molar mass is 110.20 g/mol.

It is formed by isomerization of 1-octyne catalyzed by a Yb^II complex.

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