EU/US Properties Organoleptics Cosmetics Suppliers Safety Safety in use Safety references References Other Blenders Uses Occurrence Synonyms Articles Notes
 

2-acetyl-4-isopropyl pyridine
1-(4-propan-2-ylpyridin-2-yl)ethanone

Sponsors

CAS Number: 142896-09-1Picture of molecule3D/inchi
FDA UNII:JRF96H7XWL
XlogP3-AA:2.00 (est)
Molecular Weight:163.21981000
Formula:C10 H13 N O
NMR Predictor:Predict (works with chrome or firefox)
Category:flavoring agents
 
US / EU / FDA / JECFA / FEMA / FLAVIS / Scholar / Patent Information:
Google Scholar:Search
Google Books:Search
Google Scholar: with word "volatile"Search
Google Scholar: with word "flavor"Search
Google Scholar: with word "odor"Search
Perfumer and Flavorist:Search
Google Patents:Search
US Patents:Search
EU Patents:Search
Pubchem Patents:Search
JECFA Food Flavoring:2155 2-acetyl-4-isopropylpyridine
FEMA Number:4638 2-acetyl-4-isopropylpyridine
FDA:No longer provide for the use of these seven synthetic flavoring substances
FDA Mainterm: 2-ACETYL-4-ISOPROPYLPYRIDINE
 
Physical Properties:
Appearance:pale yellow clear liquid (est)
Assay: 95.00 to 100.00
Food Chemicals Codex Listed: No
Specific Gravity:0.99200 to 0.99400 @ 25.00 °C.
Pounds per Gallon - (est).: 8.254 to 8.271
Refractive Index:1.50200 to 1.50500 @ 20.00 °C.
Boiling Point: 245.00 to 247.00 °C. @ 760.00 mm Hg (est)
Vapor Pressure:0.028000 mm/Hg @ 25.00 °C. (est)
Flash Point: 228.00 °F. TCC ( 108.80 °C. ) (est)
logP (o/w): 2.450 (est)
Soluble in:
 alcohol
 water, 1455 mg/L @ 25 °C (est)
Insoluble in:
 water
 
Organoleptic Properties:
Odor Type: green
Odor Strength:high ,
recommend smelling in a 0.10 % solution or less
grassy green leafy herbal violet
Odor Description:at 0.10 % in dipropylene glycol. grassy green leafy herbal violet
Odor and/or flavor descriptions from others (if found).
 
Cosmetic Information:
None found
 
Suppliers:
Axsyn
For experimental / research use only.
Ethanone,1-[4-(1-methylethyl)-2-pyridinyl]-
CHEMSTEP
Ethanone, 1-[4-(1-methylethyl)-2-pyridinyl]- (9CI)
Parchem
2-acetyl-4-isopropyl pyridine
Chemical Sources Association
Need This Item for Flavor/Food?: You can contact the Chemical Sources Association
 
Safety Information:
 
Hazards identification
 
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
 
Pictogram
 
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
Not determined
Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined
 
Safety in Use Information:
Category: flavoring agents
Recommendation for 2-acetyl-4-isopropyl pyridine usage levels up to:
 not for fragrance use.
 
Use levels for FEMA GRAS flavoring substances on which the FEMA Expert Panel based its judgments that the substances are generally recognized as safe (GRAS).
The Expert Panel also publishes separate extensive reviews of scientific information on all FEMA GRAS flavoring substances and can be found at FEMA Flavor Ingredient Library
publication number: 24
 average usual ppmaverage maximum ppm
baked goods: --
beverages(nonalcoholic): --
beverages(alcoholic): --
breakfast cereal: --
cheese: --
chewing gum: 0.100000.50000
condiments / relishes: --
confectionery froastings: 0.050000.30000
egg products: --
fats / oils: --
fish products: --
frozen dairy: --
fruit ices: --
gelatins / puddings: --
granulated sugar: --
gravies: --
hard candy: 0.050000.30000
imitation dairy: --
instant coffee / tea: --
jams / jellies: --
meat products: --
milk products: --
nut products: --
other grains: --
poultry: --
processed fruits: --
processed vegetables: --
reconstituted vegetables: --
seasonings / flavors: --
snack foods: --
soft candy: 0.100000.50000
soups: --
sugar substitutes: --
sweet sauces: --
 
Safety References:
EPI System: View
EPA ACToR:Toxicology Data
EPA Substance Registry Services (SRS):Registry
Laboratory Chemical Safety Summary :529345
National Institute of Allergy and Infectious Diseases:Data
1-(4-propan-2-ylpyridin-2-yl)ethanone
Chemidplus:0142896091
 
References:
 1-(4-propan-2-ylpyridin-2-yl)ethanone
NIST Chemistry WebBook:Search Inchi
Pubchem (cid):529345
Pubchem (sid):10499087
 
Other Information:
(IUPAC):Atomic Weights of the Elements 2009
(IUPAC):Atomic Weights of the Elements 2009 (pdf)
Videos:The Periodic Table of Videos
tgsc:Atomic Weights use for this web site
(IUPAC):Periodic Table of the Elements
FDA Everything Added to Food in the United States (EAFUS):View
HMDB (The Human Metabolome Database):Search
VCF-Online:VCF Volatile Compounds in Food
ChemSpider:View
 
Potential Blenders and core components note
For Odor
No odor group found for these
(E)-beta-
methyl ionone
FL/FR
alliaceous
alliaceous
dibutyl sulfide
FL/FR
amber
angelica root oil
FL/FR
animal
methyl (E)-2-octenoate
FL/FR
anisic
estragole
FL/FR
balsamic
cinnamyl formate
FL/FR
caramellic
2-iso
butyl-3-methyl pyrazine
FL/FR
citrus
lemongrass oil
FL/FR
litsea cubeba fruit oil
FL/FR
neroli ketone
FR
ocimene quintoxide
FL/FR
earthy
(S)-1-
octen-3-ol
FL/FR
ethereal
ethyl 4-pentenoate
FL/FR
fatty
(E,Z)-2,6-
dodecadienal
FL/FR
2-
nonenal
FL/FR
(E)-2-
octenal
FL/FR
floral
allyl anthranilate
FL/FR
boronia absolute
FL/FR
cassie absolute
FL/FR
cilantro herb oil egypt
FL/FR
beta-
damascenone
FL/FR
dihydro-alpha-ionone
FL/FR
dimethyl benzyl carbinyl butyrate
FL/FR
geranium oil africa
FL/FR
geranium oil egypt
FL/FR
geranyl formate
FL/FR
beta-
ionol
FL/FR
alpha-
ionol
FL/FR
(E)-beta-
ionone
FL/FR
alpha-
ionone
FL/FR
ionone mixed isomers
FL/FR
beta-
ionyl acetate
FL/FR
beta-
irone
FL/FR
alpha-
irone
FL/FR
para-
methyl benzyl acetate
FL/FR
beta-iso
methyl ionone
FL/FR
N-
methyl ionone
FR
alpha-iso
methyl ionone (50% min.)
FL/FR
alpha-iso
methyl ionone (60% min.)
FL/FR
alpha-iso
methyl ionone (70% min.)
FL/FR
alpha-iso
methyl ionone (80% min.)
FL/FR
alpha-iso
methyl ionone (90% min.)
FL/FR
methyl ionyl acetate
FL/FR
mimosa absolute
FL/FR
mimosa absolute france
FL/FR
mimosa absolute india
FL/FR
mimosa absolute morocco
FL/FR
muguet carbinol
FL/FR
orris rhizome absolute (iris pallida)
FL/FR
orris rhizome concrete butter (iris pallida)
FL/FR
orris rhizome resinoid (iris pallida)
FL/FR
iso
phytol
FL/FR
prenyl salicylate
FL/FR
rhodinyl formate
FL/FR
violet flower absolute
FL/FR
fruity
ethyl 2-ethyl acetoacetate
FL/FR
2-
hexen-1-ol
FL/FR
(E)-2-
hexen-1-ol
FL/FR
(Z)-3-
hexen-1-yl isobutyrate
FL/FR
beta-
ionone epoxide
FL/FR
2-
methyl-2-pentenal
FL/FR
2-
nonanone
FL/FR
prenyl ethyl ether
FL/FR
green
acetaldehyde butyl phenethyl acetal
FL/FR
acetaldehyde di-(Z)-3-hexen-1-yl acetal
FL/FR
acetaldehyde dipropyl acetal
FL/FR
acetaldehyde ethyl phenethyl acetal
FL/FR
alfalfa oil
FL/FR
alfalfa resinoid
FL/FR
butyl 2-methyl butyrate
FL/FR
butyl heptanoate
FL/FR
iso
butyl heptanoate
FL/FR
iso
butyl methyl ketone
FL/FR
2-sec-
butyl thiazole
FL/FR
sec-
butyl-3-methyl but-2-ene thioate
FL/FR
iso
cyclocitral (IFF)
FL/FR
3,7-
dimethyl-6-octenoic acid
FL/FR
diphenyl oxide
FL/FR
galbanum oil terpeneless
FL/FR
galbanum oleoresin
FL/FR
geranium absolute
FL/FR
heptanal (aldehyde C-7)
FL/FR
1-
heptanol
FL/FR
(Z)-4-
hepten-1-ol
FL/FR
(Z)-3-
hepten-1-ol
FL/FR
3-
hepten-2-one
FL/FR
heptyl cinnamate
FL/FR
heptyl heptanoate
FL/FR
hexanal (aldehyde C-6)
FL/FR
hexanal dihexyl acetal
FL/FR
(Z)-2-
hexen-1-ol
FL/FR
3-
hexen-1-ol
FL/FR
(Z)-3-
hexen-1-ol
FL/FR
(Z)-3-
hexen-1-yl (E)-crotonate
FL/FR
(Z)-3-
hexen-1-yl (Z)-3-hexenoate
FL/FR
(E)-2-
hexen-1-yl acetate
FL/FR
(Z)-3-
hexen-1-yl benzoate
FL/FR
(Z)-3-
hexen-1-yl lactate
FL/FR
(Z)-3-
hexen-1-yl methyl carbonate
FL/FR
3-
hexenal
FL/FR
3-
hexenyl 2-methyl butyrate
FL/FR
hexyl butyrate
FL/FR
hexyl heptanoate
FL/FR
hexyl hexanoate
FL/FR
(Z)-
leaf acetal
FL/FR
leafy acetal
FL/FR
lilac acetaldehyde
FL/FR
melon nonenoate
FL/FR
methyl heptine carbonate
FL/FR
methyl octine carbonate
FL/FR
6-
methyl-3-hepten-2-one
FL/FR
3,6-
nonadien-1-ol
FL/FR
(E,Z)-2,6-
nonadien-1-ol
FL/FR
(E,Z)-2,6-
nonadien-1-yl acetate
FL/FR
(E,Z)-2,6-
nonadienal
FL/FR
2,6-
nonadienal
FL/FR
(E,Z)-2,6-
nonadienal diethyl acetal
FL/FR
(E)-2-
nonen-1-ol
FL/FR
octanal dimethyl acetal
FL/FR
(Z)-5-
octen-1-yl propionate
FL/FR
3-
phenyl propionaldehyde
FL/FR
propylene acetal
FL/FR
rose leaf absolute (rosa centifolia)
FL/FR
seaweed absolute (fucus vesiculosus et serratus)
FL/FR
styralyl acetate
FL/FR
terpinyl propionate
FL/FR
3,5,5-
trimethyl hexanol
FL/FR
violet leaf absolute
FL/FR
herbal
6-
acetoxydihydrotheaspirane
FL/FR
alpha-
amyl cinnamyl formate
FL/FR
iso
amyl heptanoate
FL/FR
anethum graveolens herb oil
FL/FR
anthemis nobilis flower extract
FL/FR
anthemis nobilis flower oil roman
FL/FR
sweet
basil absolute
FL/FR
(+)-alpha-
campholenic aldehyde
FL/FR
coriander oleoresin
FL/FR
dill weed oil cuba
FL/FR
dill weed oil reunion
FL/FR
dimethyl benzyl carbinyl formate
FL/FR
hexanol
FL/FR
hop absolute
FL/FR
hop oil
FL/FR
linalyl formate
FL/FR
linalyl octanoate
FL/FR
melaleuca leucadendron var. cajuputi leaf oil
FL/FR
(E)-6-
methyl-3-hepten-2-one
FL/FR
1-
octen-3-yl acetate
FL/FR
origanum oil
FL/FR
origanum oil greece
FL/FR
curled
parsley herb oil
FL/FR
perilla leaf oil
FL/FR
perillaldehyde
FL/FR
rosemary oleoresin
FL/FR
rosmarinus officinalis extract
FL/FR
tagete oil CO2 extract
FL/FR
tagete oil rwanda
FL/FR
tagete oil south africa
FL/FR
theaspirane
FL/FR
thyme absolute
FL/FR
thymyl methyl ether
FL/FR
viridiflorol
FL/FR
wormwood oil america
FL/FR
wormwood oil cuba
FL/FR
wormwood oil italy
FL/FR
wormwood oil poland
FL/FR
yerba mate absolute
FL/FR
honey
phenyl pyruvic acid
FL/FR
leafy
curry leaf absolute
FL/FR
minty
mentha piperita extract
FL/FR
iso
pulegol
FL/FR
(-)-iso
pulegol
FL/FR
(R)-(+)-
pulegone
FR
iso
pulegyl formate
FL/FR
powdery
alpha-
methyl ionone
FL/FR
(E)-alpha-
methyl ionone (44-50%)
FL/FR
(E)-alpha-
methyl ionone (50-60%)
FL/FR
(E)-alpha-
methyl ionone (74-80%)
FL/FR
spicy
iso
butyl angelate
FL/FR
(-)-
cubenol
FL/FR
cuminaldehyde
FL/FR
sulfurous
3-(
methyl thio) hexanol
FL/FR
tea
tea resinoid
FL/FR
terpenic
gamma-
terpinene
FL/FR
tonka
saffron resinoid
FL/FR
waxy
ethyl myristate
FL/FR
woody
cinnamyl tiglate
FL/FR
For Flavor
No flavor group found for these
acetaldehyde di-(Z)-3-hexen-1-yl acetal
FL/FR
6-
acetoxydihydrotheaspirane
FL/FR
2-
acetyl-4-isopropenyl pyridine
FL
allyl anthranilate
FL/FR
alpha-
amyl cinnamyl formate
FL/FR
ascorbic acid
FL
butyl 2-methyl butyrate
FL/FR
iso
butyl heptanoate
FL/FR
2-sec-
butyl thiazole
FL/FR
4-
butyl thiazole
FL
2-
butyl thiazole
FL
sec-
butyl-3-methyl but-2-ene thioate
FL/FR
cinnamyl tiglate
FL/FR
dimethyl benzyl carbinyl formate
FL/FR
ethyl 4-pentenoate
FL/FR
2-
ethyl pyridine
FL
fig leaf absolute
FL
3-(2-
furyl) acrolein
FL
(Z)-3-
hepten-1-ol
FL/FR
2-
heptenoic acid
FL
heptyl cinnamate
FL/FR
(E,E)-2,4-
hexadien-1-ol
FL
hexanal dihexyl acetal
FL/FR
3-
hexen-1-ol
FL/FR
(Z)-3-
hexen-1-yl (E)-crotonate
FL/FR
(E)-2-
hexenal
FL
2-
hexenal
FL
(Z)-3-
hexenoic acid
FL
hexyl heptanoate
FL/FR
beta-
ionone epoxide
FL/FR
ionone mixed isomers
FL/FR
linalyl formate
FL/FR
melaleuca leucadendron var. cajuputi leaf oil
FL/FR
(E)-beta-
methyl ionone
FL/FR
beta-iso
methyl ionone
FL/FR
(E)-alpha-
methyl ionone (44-50%)
FL/FR
(E)-alpha-
methyl ionone (50-60%)
FL/FR
alpha-iso
methyl ionone (60% min.)
FL/FR
3-(
methyl thio) hexanal
FL
2-
methyl-3-heptanone
FL
6-
methyl-3-hepten-2-one
FL/FR
(E)-6-
methyl-3-hepten-2-one
FL/FR
3-
methyl-3-pentanol
FL
2,6-
nonadienal
FL/FR
(E,E)-3,5-
octadien-2-one
FL
(S)-1-
octen-3-ol
FL/FR
perilla leaf oil
FL/FR
prenyl ethyl ether
FL/FR
2-
propyl thiazole
FL
propylene acetal
FL/FR
iso
pulegyl formate
FL/FR
seaweed absolute (fucus vesiculosus et serratus)
FL/FR
ortho-
vinyl anisole
FL
viridiflorol
FL/FR
apple
apple
(E,Z)-2,6-
nonadien-1-ol
FL/FR
aromatic
leafy acetal
FL/FR
berry
dihydro-alpha-ionone
FL/FR
cheesy
2-
nonanone
FL/FR
citrus
lemongrass oil
FL/FR
litsea cubeba fruit oil
FL/FR
cooling
theaspirane
FL/FR
creamy
3-
hepten-2-one
FL/FR
cucumber
2-
ethyl octine carbonate
FL
fatty
(Z)-3-
hexen-1-yl benzoate
FL/FR
(E,E)-2,4-
nonadienal
FL
2-
nonenal
FL/FR
(E)-2-
octenal
FL/FR
floral
dimethyl benzyl carbinyl butyrate
FL/FR
3,7-
dimethyl-6-octenoic acid
FL/FR
geranium oil africa
FL/FR
geranium oil egypt
FL/FR
beta-
ionol
FL/FR
alpha-
ionone
FL/FR
beta-
irone
FL/FR
alpha-iso
methyl ionone (50% min.)
FL/FR
alpha-iso
methyl ionone (70% min.)
FL/FR
(E)-alpha-
methyl ionone (74-80%)
FL/FR
alpha-iso
methyl ionone (80% min.)
FL/FR
alpha-iso
methyl ionone (90% min.)
FL/FR
mimosa absolute morocco
FL/FR
muguet carbinol
FL/FR
orris rhizome concrete butter (iris pallida)
FL/FR
orris rhizome resinoid (iris pallida)
FL/FR
violet flower absolute
FL/FR
fruity
boronia absolute
FL/FR
butyl heptanoate
FL/FR
ethyl 2-ethyl acetoacetate
FL/FR
2,4-
hexadien-1-ol
FL
2-
hexen-1-ol
FL/FR
(Z)-3-
hexen-1-yl isobutyrate
FL/FR
hexyl hexanoate
FL/FR
lilac acetaldehyde
FL/FR
linalyl octanoate
FL/FR
methyl (E)-2-octenoate
FL/FR
para-
methyl benzyl acetate
FL/FR
alpha-
methyl ionone
FL/FR
2-
methyl-2-pentenal
FL/FR
rhodinyl formate
FL/FR
styralyl acetate
FL/FR
tagete oil CO2 extract
FL/FR
tagete oil rwanda
FL/FR
tagete oil south africa
FL/FR
green
acetaldehyde butyl phenethyl acetal
FL/FR
acetaldehyde dipropyl acetal
FL/FR
acetaldehyde ethyl phenethyl acetal
FL/FR
alfalfa oil
FL/FR
alfalfa resinoid
FL/FR
angelica root oil
FL/FR
iso
butyl angelate
FL/FR
iso
butyl methyl ketone
FL/FR
2-iso
butyl-3-methyl pyrazine
FL/FR
(+)-alpha-
campholenic aldehyde
FL/FR
coriander oleoresin
FL/FR
iso
cyclocitral (IFF)
FL/FR
dibutyl sulfide
FL/FR
diphenyl oxide
FL/FR
(E,Z)-2,6-
dodecadienal
FL/FR
galbanum oil terpeneless
FL/FR
galbanum oleoresin
FL/FR
geranium absolute
FL/FR
geranyl formate
FL/FR
green note enhancer
FL
heptanal (aldehyde C-7)
FL/FR
(Z)-4-
hepten-1-ol
FL/FR
heptyl heptanoate
FL/FR
hexanal (aldehyde C-6)
FL/FR
hexanol
FL/FR
(Z)-3-
hexen-1-ol
FL/FR
(E)-2-
hexen-1-ol
FL/FR
(Z)-2-
hexen-1-ol
FL/FR
(Z)-3-
hexen-1-yl (Z)-3-hexenoate
FL/FR
(E)-2-
hexen-1-yl acetate
FL/FR
(Z)-3-
hexen-1-yl lactate
FL/FR
(Z)-3-
hexen-1-yl methyl carbonate
FL/FR
3-
hexenal
FL/FR
3-
hexenyl 2-methyl butyrate
FL/FR
hexyl butyrate
FL/FR
(Z)-
leaf acetal
FL/FR
melon nonenoate
FL/FR
methyl 2-undecynoate
FL
methyl heptine carbonate
FL/FR
methyl octine carbonate
FL/FR
3,6-
nonadien-1-ol
FL/FR
(E,Z)-2,6-
nonadien-1-yl acetate
FL/FR
(E,Z)-2,6-
nonadienal
FL/FR
(E,Z)-2,6-
nonadienal diethyl acetal
FL/FR
(E)-2-
nonen-1-ol
FL/FR
ocimene quintoxide
FL/FR
octanal dimethyl acetal
FL/FR
(Z)-5-
octen-1-yl propionate
FL/FR
1-
octen-3-yl acetate
FL/FR
3-
phenyl propionaldehyde
FL/FR
rose leaf absolute (rosa centifolia)
FL/FR
terpinyl propionate
FL/FR
3,5,5-
trimethyl hexanol
FL/FR
violet leaf absolute
FL/FR
herbal
iso
amyl heptanoate
FL/FR
anethum graveolens herb oil
FL/FR
anthemis nobilis flower extract
FL/FR
anthemis nobilis flower oil roman
FL/FR
sweet
basil absolute
FL/FR
cilantro herb oil egypt
FL/FR
curry leaf absolute
FL/FR
dill weed oil cuba
FL/FR
dill weed oil reunion
FL/FR
hop absolute
FL/FR
hop oil
FL/FR
origanum oil
FL/FR
origanum oil greece
FL/FR
curled
parsley herb oil
FL/FR
prenyl salicylate
FL/FR
rosemary oleoresin
FL/FR
rosmarinus officinalis extract
FL/FR
thyme absolute
FL/FR
wormwood oil america
FL/FR
wormwood oil cuba
FL/FR
wormwood oil italy
FL/FR
wormwood oil poland
FL/FR
yerba mate absolute
FL/FR
licorice
estragole
FL/FR
metallic
3-(
methyl thio) hexanol
FL/FR
minty
mentha piperita extract
FL/FR
iso
pulegol
FL/FR
(-)-iso
pulegol
FL/FR
musty
thymyl methyl ether
FL/FR
oily
iso
phytol
FL/FR
tetrahydrofurfuryl propionate
FL
phenolic
phenyl pyruvic acid
FL/FR
solvent
1-
heptanol
FL/FR
spicy
cassie absolute
FL/FR
cinnamyl formate
FL/FR
(-)-
cubenol
FL/FR
cuminaldehyde
FL/FR
perillaldehyde
FL/FR
sweet
orris rhizome absolute (iris pallida)
FL/FR
saffron resinoid
FL/FR
tea
green
tea leaf distillates
FL
tea resinoid
FL/FR
terpenic
gamma-
terpinene
FL/FR
waxy
ethyl myristate
FL/FR
mimosa absolute
FL/FR
mimosa absolute france
FL/FR
mimosa absolute india
FL/FR
woody
beta-
damascenone
FL/FR
alpha-
ionol
FL/FR
(E)-beta-
ionone
FL/FR
beta-
ionyl acetate
FL/FR
alpha-
irone
FL/FR
methyl ionyl acetate
FL/FR
 
Potential Uses:
None Found
 
Occurrence (nature, food, other):note
 mentha gentilis f. cardiaca
Search Trop Picture
 peppermint oil
Search Trop Picture
 spearmint oil
Search Trop Picture
 
Synonyms:
2-acetyl-4-isopropylpyridine
 ethanone, 1-[4-(1-methylethyl)-2-pyridinyl]-
 ethanone, 1-[4-(1-methylethyl)-2-pyridinyl]- (9CI)
 ethanone,1-[4-(1-methylethyl)-2-pyridinyl]-
 ethanone,1-[4-(isopropyl)-pyridin-2-yl]-
(4-(1-methyl ethyl)-2-pyridinyl) ethanone
(4-(1-methylethyl)-2-pyridinyl) ethanone
(4-(1-methylethyl)-2-pyridinyl)ethanone
1-[4-(1-methylethyl)-2-pyridinyl]ethanone
1-(4-propan-2-ylpyridin-2-yl)ethanone
1-(4-isopropylpyridin-2-yl)ethanone
 pyridine, 2-acetyl-4-(1-methylethyl)
 

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