| Identification | Back Directory | [Name]
ALPHA-ISO-METHYLIONONE | [CAS]
127-51-5 | [Synonyms]
α-Cetone
FEMA 2714
NSC 66432
ISORALDEINE
IRISANTHEME
Isonaline 70
ALPHA-CETONE
Methyl lonone
CETONE, ALPHA
g-Methylionone
alpha-IsoMethy
CETONE ALPHA LG
METHYLIONON ALPHA
3-methyl-4-(2,6,6
α-Isomethylionone
a-Isomethylionone
METHYL IONONE GAMMA
Cetone Alpha (tech)
Iso-Methyl ionone 70
8-Methyl-alpha-ionone
METHYL IONONE A, GAMMA
Methyl-alpha-isoionone
ISOMETHYL-ALPHA-IONONE
ISOMETHYL IONONE ALPHA
ALPHA-ISO-METHYLIONONE
METHYL IONONE ALPHA ISO
iso-alpha-methyl ionone
alpha-Ionone, isomethyl-
METHYL IONONE GAMMA REGULAR
METHYL IONONE ALPHA ISO SUPER
3-METHYL-4-(2,6,6-TRIMETHYLCYCLOHEX-2-ENYL)BUT-3-EN-2-ONE
4-(2,6,6-Trimethyl-2-cyclohexenyl)-3-methyl-3-buten-2-one
3-Methyl-4-(2,6,6-trimethyl-2-cyclohexenyl)-3-butene-2-one
3-METHYL-4-(2,6,6-TRIMETHYL-2-CYCLOHEX-1-YL)-3-BUTEN-2-ONE
3-methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-on
4-(2,6,6-TRIMETHYL-2-CYCLOHEXEN-1-YL)-3-METHYL-3-BUTEN-2-ONE
3-METHYL-4-(2,6,6-TRIMETHYL-2-CYCLOHEXEN-1-YL)-3-BUTEN-2-ONE
3-Methyl-4-(2,6,6-triMethylcyclohex-2-en-1-yl)but-3-en-2-one
3-BUTEN-2-ONE, 3-METHYL-4-(2,6,6-TRIMETHYL-2-CYCLOHEXEN-1-YL)
(E)-3-METHYL-4-(2,6,6-TRIMETHYL-CYCLOHEX-2-ENYL)-BUT-3-EN-2-ONE
3-Methyl-4-(2,6,6-trimethylcyclohex-2-enyl)but-3-en-2-one , tech
(E)-3-Methyl-4-(2,6,6-triMethylcyclohex-2-en-1-yl)but-3-en-2-one
(3E)-3-Methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one
4-(2,6,6-TRIMETHYLCYCLOHEX-2-EN-1-YL)-3-METHYLBUT-3-EN-2-ONE, TECH.
alpha-Isomethylionone
3-Methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one | [EINECS(EC#)]
204-846-3 | [Molecular Formula]
C14H22O | [MDL Number]
MFCD00034582 | [MOL File]
127-51-5.mol | [Molecular Weight]
206.32 |
| Chemical Properties | Back Directory | [Boiling point ]
121-122℃ (9 Torr) | [density ]
0.93 g/mL at 20 °C(lit.)
| [vapor pressure ]
0.22Pa at 20℃ | [FEMA ]
2714 | [refractive index ]
1.50188 (589.3 nm 20℃) | [storage temp. ]
room temp | [solubility ]
Chloroform (Slightly), DMSO (Slightly), Methanol (Slightly) | [form ]
liquid | [color ]
Light orange to Yellow to Green | [Odor]
at 10.00 % in dipropylene glycol. woody violet floral | [Odor Type]
floral | [Water Solubility ]
27.953mg/L at 25℃ | [JECFA Number]
404 | [Stability:]
Light Sensitive | [Contact allergens]
As a fragrance allergen, a-isomethylionone has to be
mentioned by name in cosmetics within the EU. | [LogP]
4.288 at 25℃ | [EPA Substance Registry System]
3-Buten-2-one, 3-methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)- (127-51-5) |
| Hazard Information | Back Directory | [Description]
α-Isomethylionone has a fine violet and orris-like odor. This substance may be synthesized by condensation of citral with methyl
ethyl ketone controlling the ratio between the n- and iso-forms;
the methyl pseudo-ionone obtained is then subjected to ring closure, using strong alkali and high temperature (thus favoring the
formation of the normal α- and β-methylionones) or with quaternary ammonium base (thus favoring the formation of wo-forms);
See also monographs of α- and β-ionone and methyl α-, β-, and
γ-ionones. | [Chemical Properties]
α-Isomethylionone has a fine violet and orris-like odor. | [Definition]
ChEBI: 3-Methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one is a sesquiterpenoid. | [Preparation]
By condensation of citral with methyl ethyl ketone controlling the ratio between the n- and iso-forms; the methyl pseudoionone obtained is then subjected to ring closure, using strong alkali and high temperature (thus favoring the formation of iso-forms);
See also monographs of α-, β-, and γ-ionones. | [Flammability and Explosibility]
Notclassified |
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