trans-2-Methyl-2-butenal

trans-2-Methyl-2-butenal

IUPAC name trans-2-methyl-2-butenal
Other names trans-2,3-dimethylacrolein, tiglic aldehyde, tiglinaldehyde, tiglaldehyde
Identifiers
CAS number	497-03-0^Y
PubChem	5321950
ChemSpider	4479558^Y
UNII	27ZVE2K81C^Y
Jmol-3D images	Image 1
SMILES O=C/C(=C/C)C
InChI InChI=1S/C5H8O/c1-3-5(2)4-6/h3-4H,1-2H3/b5-3+^Y Key: ACWQBUSCFPJUPN-HWKANZROSA-N^Y InChI=1/C5H8O/c1-3-5(2)4-6/h3-4H,1-2H3/b5-3+ Key: ACWQBUSCFPJUPN-HWKANZROBA
Properties
Molecular formula	C₅H₈O
Molar mass	84.12
Appearance	colorless liquid
Density	0.871
Melting point	-78 °C, 195 K, -108 °F
Boiling point	116–119 °C (752 mm Hg)
Hazards
Flash point	65 °F
Related compounds
Related alkenals	Citral Citronellal Methacrolein
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

trans-2-Methyl-2-butenal is an organic compound with the formula CH₃CH=C(CH₃)CHO. This colorless liquid is a building block in organic synthesis. It is an α,β-unsaturated aldehyde related to the better known crotonaldehyde. Oryctolagus cuniculus (European rabbit) utilizes 2-methyl-2-butenal as a pheromone.^[1]

References

^ Schaal, B., Coureaud, G., Langlois, D., Ginles, C., Semon, E., and Perrier, G. 2003. Chemical and behavioural characterization of the rabbit mammary pheromone. Nature. 424:68-72.