Hagemann's ester

Hagemann's ester
Names
	Preferred IUPAC name Ethyl 2-methyl-4-oxocyclohex-2-ene-1-carboxylate
	Other names Ethyl 2-methyl-4-oxocyclohex-2-enecarboxylate; 4-Carbethoxy-3-methyl-2-cyclohexen-1-one
Identifiers
CAS Number	487-51-4 ;
3D model (JSmol)	Interactive image;
ChEMBL	ChEMBL84047 [EMBL];
ChemSpider	71353 ;
ECHA InfoCard	100.006.962
EC Number	207-657-4;
PubChem CID	79020;
UNII	5QME6N6BKP ;
CompTox Dashboard (EPA)	DTXSID801029631 ;
	InChI InChI=1S/C10H14O3/c1-3-13-10(12)9-5-4-8(11)6-7(9)2/h6,9H,3-5H2,1-2H3 Key: VLTANIMRIRCCOQ-UHFFFAOYSA-N ; InChI=1/C10H14O3/c1-3-13-10(12)9-5-4-8(11)6-7(9)2/h6,9H,3-5H2,1-2H3 Key: VLTANIMRIRCCOQ-UHFFFAOYAX;
	SMILES O=C(OCC)C1C(=C\C(=O)CC1)/C;
Properties
Chemical formula	C10H14O3
Molar mass	182.219 g·mol−1
Density	1.078 g/mL
Boiling point	268 to 272 °C (514 to 522 °F; 541 to 545 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Hagemann's ester, ethyl 2-methyl-4-oxo-2-cyclohexenecarboxylate, is an organic compound that was first prepared and described in 1893 by German chemist Carl Hagemann. The compound is used in organic chemistry as a reagent in the synthesis of many natural products including sterols, trisporic acids, and terpenoids.