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93192

Sigma-Aldrich

α-Cetone

odorant used in allergy studies

Sinónimos:

3-Methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one, α-Cetone, Isomethyl-α-ionone

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About This Item

Fórmula empírica (notación de Hill):
C14H22O
Número de CAS:
127-51-5
Peso molecular:
206.32
EC Number:
204-846-3
MDL number:
MFCD00034582
UNSPSC Code:
12352200
PubChem Substance ID:
57653524
NACRES:
NA.52

grade

for molecular biology

form

liquid

composition

iso-ɑ-methylionone, ≥85%
iso-β-methylionone, ≤10%

density

0.93 g/mL at 20 °C (lit.)

storage temp.

room temp

SMILES string

CC(=O)C(\C)=C\C1C(C)=CCCC1(C)C

InChI

1S/C14H22O/c1-10-7-6-8-14(4,5)13(10)9-11(2)12(3)15/h7,9,13H,6,8H2,1-5H3/b11-9+

InChI key

JRJBVWJSTHECJK-PKNBQFBNSA-N

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General description

3-Methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one is fragrant sensitizer added frequently to deodorants and perfumes. It is one of the allergens responsible for axillary dermatitis.

Application

Suitable for
  • contact sensitization studies to identify allergens present in cosmetic preparations
  • elucidation of molecular pathways related to allergic reactions
  • analytical standard

pictograms

Environment
GHS09

hcodes

H411

Hazard Classifications

Aquatic Chronic 2

Storage Class

10 - Combustible liquids

wgk_germany

WGK 2

flash_point_f

230.5 °F - closed cup

flash_point_c

110.3 °C - closed cup

ppe

Eyeshields, Gloves

Certificados de análisis (COA)

Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»

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β-Ionone 96%

Sigma-Aldrich

I12603

β-Ionone

Valerie T Politano et al.
International journal of toxicology, 31(6), 595-601 (2013-01-04)
Alpha-iso-methylionone (AIM), a fragrance ingredient, was evaluated for systemic toxicity in rats. Male and female Sprague Dawley rats were administered 0, 5, 30, or 500 mg/kg/d AIM via gavage for 90 days. Statistically significant changes in blood chemistry parameters (reduced
Valerie T Politano et al.
International journal of toxicology, 26(3), 271-276 (2007-06-15)
Alpha-iso-methylionone, a widely used fragrance ingredient, was evaluated for developmental toxicity in presumed pregnant Sprague-Dawley rats (25/group). Oral dosages of 0, 3, 10, or 30 mg/kg/day alpha-iso-methylionone in corn oil were administered by gavage on gestational days 7 to 17.
Susumu Ishizaki et al.
Bioscience, biotechnology, and biochemistry, 68(5), 1164-1166 (2004-06-01)
The main biodegradation product of (+/-)-alpha-isomethylionone (2) with standard activated sludge was characterized as (+/-)-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)propan-2-one (1) by its analysis and synthesis. Both enantiomers (1a and 1b) of 1 were synthesized by starting from (R)- and (S)-2,4,4-trimethyl-2-cyclohexen-1-ol (3a and 3b), respectively.
A Lapczynski et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 45 Suppl 1, S280-S289 (2007-11-27)
A toxicologic and dermatologic review of alpha-iso-methylionone when used as a fragrance ingredient is presented.
Susun An et al.
Contact dermatitis, 53(6), 320-323 (2005-12-21)
The purpose of this study is to determine the frequency of responses to selected fragrances in patients with suspected fragrance allergy and to evaluate the risk factors. 9 dermatology departments of university hospitals have participated in this study for the
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