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Sigma-Aldrich

2,6-Dimethyl-5-heptenal

technical grade, 80%

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Synonym(s):
Melonal
Linear Formula:
(CH3)2C=CHCH2CH2CH(CH3)CHO
CAS Number:
Molecular Weight:
140.22
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

grade

technical grade

Assay

80%

form

liquid

refractive index

n20/D 1.444 (lit.)

bp

116-124 °C/100 mmHg (lit.)

density

0.879 g/mL at 25 °C

SMILES string

CC(CC\C=C(\C)C)C=O

InChI

1S/C9H16O/c1-8(2)5-4-6-9(3)7-10/h5,7,9H,4,6H2,1-3H3

InChI key

YGFGZTXGYTUXBA-UHFFFAOYSA-N

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This Item
W238920W238902W478955
form

liquid

form

-

form

-

form

-

refractive index

n20/D 1.444 (lit.)

refractive index

n20/D 1.444 (lit.)

refractive index

n20/D 1.444 (lit.)

refractive index

-

bp

116-124 °C/100 mmHg (lit.)

bp

116-124 °C/100 mmHg (lit.)

bp

116-124 °C/100 mmHg (lit.)

bp

-

density

0.879 g/mL at 25 °C

density

0.851 g/mL at 25 °C

density

0.851 g/mL at 25 °C

density

-

Quality Level

100

Quality Level

400

Quality Level

400

Quality Level

400

General description

2,6-Dimethyl-5-heptenal (melonal) and 5-heptenal undergo concerted ene reaction to form zwitterion that further reacts to give ene product.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Skin Sens. 1B

Storage Class Code

10 - Combustible liquids

WGK

WGK 2

Flash Point(F)

143.6 °F

Flash Point(C)

62 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Alkylaluminum halide induced cyclization of unsaturated carbonyl compounds.
Snider BB, et al.
The Journal of Organic Chemistry, 47(23), 4538-4545 (1982)
I F Gaunt et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 21(5), 543-549 (1983-10-01)
Groups of 15 male and 15 female rats were fed for at least 90 days on diets that provided 2,6-dimethylhept-5-en-1-al (DMH) at average intakes of 0 (control), 9, 37 and 150 mg/kg body weight/day. Steps were taken to limit loss
Natali Amar-Zrihen et al.
Journal of agricultural and food chemistry, 59(10), 5554-5564 (2011-04-19)
Four lipophilic food volatile molecules of different chemical characteristics, phenylacetaldehyde, 2,6-dimethyl-5-heptenal, linalool, and trans-4-decenal, were solubilized into binary mixtures of monoolein/water, facilitating the formation of reverse hexagonal (H(II)) mesophases at room temperature without the need of solvents or triglycerides. Some

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