Compound: 2,6-Dimethyl-2,5-heptadien-4-one
SMILES: O=C(C=C(C)C)C=C(C)C
InChIKey: MTZWHHIREPJPTG-UHFFFAOYSA-N
Synonyms: 2,6-Dimethyl-2,5-heptadien-4-one, 504-20-1, PHORONE, 2,6-Dimethylhepta-2,5-dien-4-one, Diisopropylidene acetone, Foron, Diisobutenyl ketone, 2,5-Heptadien-4-one, 2,6-dimethyl-, Phoron, diisopropylideneacetone, sym-Diisopropylidene acetone, DTXSID1021584, 8F20OEI0MV, NSC-38718, DTXCID101584, CHEBI:35572, RefChem:861890, 207-986-3, s-Diisopropylidene acetone, MFCD00008901, 2,6-dimethyl-hepta-2,5-dien-4-one, NSC 38718, 2,6-Dimethyl-2,5-heptadiene-4-one, 2,5-heptadien-4-one, Phoron [German], WLN: 1Y1&U1V1UY1&1, CCRIS 4350, EINECS 207-986-3, UNII-8F20OEI0MV, BRN 1699751, AI3-00047, Diisobutenylketone, PHORONE [MI], 4-01-00-03564 (Beilstein Handbook Reference), SCHEMBL157728, orb3023746, CHEMBL2766015, NSC38718, Tox21_201097, BBL100361, NSC403517, STL554155, AKOS015841777, CS-W018571, FD33562, GS-4453, NSC-403517, NCGC00248921-01, NCGC00258649-01, 2 pound not6-dimethyl-5-heptadien-4-one, AC-37908, CAS-504-20-1, SY026937, DB-116500, 2,6-Dimethyl-2,5-heptadien-4-one, 95%, NS00022246, 2,6-DIMETHYL-2,5-HEPTADIEEN-4-ONE, EN300-125149, F12420, F075754, Q612199, InChI=1/C9H14O/c1-7(2)5-9(10)6-8(3)4/h5-6H,1-4H
Theoretical properties:
molecular_formula: C9H14O
molecular_weight: 138.21 g/mol
exact_mass: 138.104465066 g/mol
formal_charge: 0
hydrogen_bond_donor_count: 0
hydrogen_bond_acceptor_count: 1
rotatable_bond_count: 2
heavy_atom_count: 10
topological_polar_surface_area: 17.1 Å²
isotope_atom_count: 0
covalently_bonded_unit_count: 1
Physical properties:
boiling_point: 198 °C
melting_point: 28 °C
density: Relative density (water = 1): 0.9
solubility: Solubility in water: poor
flash_point: 185 °F (NFPA, 2010)
vapor_pressure: 0.38 [mmHg]
Descriptions:
pubchem: Phorone is a dialkenyl ketone.
chembl: PHORONE is a small molecule listed in the ChEMBL database but has not progressed to an approved clinical phase.
wikipedia: This is a static list of 599 additives that could be added to tobacco cigarettes in 1994. The ABC News program Day One first released the list to the public on March 7, 1994. It was submitted to the United States Department of Health and Human Services in April 1994. They are also listed in the documents that are part of the 1998 Tobacco Master Settlement Agreement. It applies, as documented, only to American manufactured cigarettes intended for distribution within the United States by the listed companies. The five major tobacco companies that reported the information were:

American Tobacco Company
Brown and Williamson
Liggett Group, Inc.
Philip Morris Inc.
R.J. Reynolds Tobacco Company
One significant issue is that while all these chemical compounds have been approved as additives to food, they were not tested by burning. Burning changes the properties of chemicals. Burning creates additional toxic compounds, including carcinogens. According to the U.S. National Cancer Institute: "Of the more than 7,000 chemicals in tobacco smoke, at least 250 are known to be harmful, including hydrogen cyanide, carbon monoxide, and ammonia. Among the 250 known harmful chemicals in tobacco smoke, at least 69 can cause cancer." See: Health effects of tobacco smoking and List of cigarette smoke carcinogens.
Although many of these additives are used in making cigarettes, each cigarette does not contain all of these additives. Some of these additives are found in cigarettes outside the USA too.
Some American brands are sold in other nations. For example: Marlboro, L&M, Winston, Chesterfield, Kent, and Newport.