Molecular Structure of 2,6-Dimethyl-5-heptenal (CAS NO.106-72-9):

IUPAC Name: 2,6-Dimethylhept-5-enal 
Molecular Formula: C₉H₁₆O
Molecular Weight: 140.22
EINECS: 203-427-2
FEMA: 2389
XLogP3-AA: 2.5
H-Bond Donor: 0
H-Bond Acceptor: 1 
Index of Refraction: 1.433
Molar Refractivity: 43.79 cm³
Molar Volume: 168.2 cm³
Surface Tension: 26 dyne/cm
Density: 0.833 g/cm³
Flash Point: 60.6 °C
Enthalpy of Vaporization: 42.39 kJ/mol
Boiling Point: 187.7 °C at 760 mmHg
Vapour Pressure: 0.622 mmHg at 25 °C
Sensitive: Air Sensitive
Canonical SMILES: CC(CCC=C(C)C)C=O
InChI: InChI=1S/C9H16O/c1-8(2)5-4-6-9(3)7-10/h5,7,9H,4,6H2,1-3H3
InChIKey: YGFGZTXGYTUXBA-UHFFFAOYSA-N

 2,6-Dimethyl-5-heptenal (CAS NO.106-72-9) is used as a daily food flavor for preparation of cantaloupe, cucumbers and tropical fruit flavor.

Safety Information of 2,6-Dimethyl-5-heptenal (CAS NO.106-72-9):
Hazard Codes: Xi
Risk Statements: 36/37/38 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36/37/39 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
RIDADR: 1987
WGK Germany: 2
RTECS: MJ8797000
Hazard Note: Irritant
HazardClass: 3
PackingGroup: III
When heated to decomposition it emits acrid smoke and irritating fumes.

 2,6-Dimethyl-5-heptenal (CAS NO.106-72-9), its Synonyms are 2,6-Dimethyl-2-hepten-7-al ; 2,6-Dimethyl-5-heptenal (natural) ; 2,6-Dimethylhept-5-en-1-al ; 5-Heptenal, 2,6-dimethyl- ; Melonal ; Bergamal .