• CTC Organics
    • CTC Organics
      For More Than 40 Year
      Your source for rare aroma chemicals for the flavor and fragrance industy.
      “The world is run by middle men.” The number of times I have heard Dr. Liu utter those words are innumerable. He loved reciting and recording famous quotes and had many of his own. Among his many talents, Dr. Liu had a unique genius in the area of chemistry. He had an uncanny understanding of the pulse of the chemical industry and was a superb salesman.
      US Email: Customer Service
      US Voice: (404) 524-6744
      US Fax: (404) 577-1651
      W2123 cyclocitral
  • Penta International
    • Penta International Corporation
      Chemistry innovation
      At Penta, our products and services help businesses do business better.
      For over 30 years, Penta Manufacturing Company has played a growing role in worldwide chemistry innovations and applications. As an industry leader, Penta continues to pioneer chemistry-based solutions for practically every area of commerce. Our products and expertise have helped fuel technical advances in dozens of commercial applications including flavoring, coloring, fragrances and chemical processes.
      US Email: Technical Services
      US Email: Sales
      US Voice: (973) 740-2300
      US Fax: (973) 740-1839
      03-71600 beta-CYCLOCITRAL, Kosher
  • SAFC Global
    • SAFC
      Complete Supply Chain
      The perfect blend of products and services that bring your creativity to life.
      Sigma-Aldrich is a leading Life Science and High Technology company dedicated to providing high-quality, safe and certified flavor ingredients with transparent and easily accessible documentation to customers around the globe. Sigma-Aldrich also provides a suite of analytical tools that allow food analysts to simplify sample preparation, cleanup and analysis steps, while increasing sensitivity to trace ingredients and harmful substances to meet regulations and quality standards.
      Email: Information
      US Email: Sales
      US Voice: 800-244-1173
      US Fax: 800-368-4661
      W363928 beta-Cyclocitral ≥90%, Kosher, FG
  • Taytonn
      Supplying Asia Pacific
      We fully understand the demands of the F&F industry and we endeavour to supply quality products, with ready availability and a personalised service.
      Since 2001 TAYTONN has been distributing key ingredients to the Fragrance and Flavor industry in Asia. We work closely with customers, principals and vendors. Together we forecast demand and match it with supply of aroma chemicals, essential oils and natural isolates & extracts. Sourced from around the world, our F&F ingredient inventory in Singapore is ready to ship to any location in Asia and beyond. Time and again, we help our principals introduce new discoveries to the F&F market - stimulating creativity and bringing value added proposition to our customers.
      Email: Info
      Email: Sales
      Voice: + 65 - 6861 8113
      Fax: + 65 - 6861 8115
  • Treatt
    • Treatt PLC
      Full Range of Naturals
      World-leading, independent ingredients supplier to the flavour and fragrance industries.
      We are proud of our heritage in trading essential oils. Our founder Richard Court Treatt's charismatic and personable approach still embodies the spirit of Treatt today.
      Email: Enquiries
      US Email: Enquiries
      Voice: +44 (0) 1284 702500
      Fax: +44 (0) 1284 703809
      US Voice: +1 863 668 9500
      US Fax: +1 863 668 3388
      beta-Cyclocitral 95% ≥95%. NI, Kosher

      Used in chewing gum at 5ppm, frozen/hard confection at 1ppm, desserts and soft confection at 0.5ppm.
Synonyms   Articles   Notes   Search
2,6,6-trimethylcyclohexene-1-carbaldehyde (Click)
CAS Number: 432-25-7
ECHA EC Number: 207-081-3
MDL: MFCD00079078
FEMA Number: 3639
CoE Number: 11849
XlogP3-AA: 2.40 (est)
Molecular Weight: 152.23672000
Formula: C10 H16 O
NMR Predictor: Predict
Category: flavor and fragrance 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
IBM Patents: Obtain
Pubchem Patents: Search
PubMed: Search
NCBI: Search
Read: Under the conditions of intended use - New developments in the FEMA GRAS program and the safety assessment of flavor ingredients
Read: A GRAS assessment program for flavor ingredients
Read: Sensory testing for flavorings with modifying properties. Food Technology
Read: Criteria for the safety evaluation of flavoring substances
Read: A procedure for the safety evaluation of natural flavor complexes used as ingredients in food: essential oils
Read: FEMA Expert Panel: 30 Years of safety evaluation for the flavor industry
Read: Consumption ratio and food predominance of flavoring materials
JECFA Food Flavoring: 979  2,6,6-trimethyl-1&2-cyclohexen-1-carboxaldehyde
Flavis Number: 05.121 (Old)
EU SANCO Food Flavourings: 05.121  2,6,6-trimethyl-1-cyclohexen-1-carboxaldehyde

FEMA Number: 3639  2,6,6-trimethyl-1&2-cyclohexen-1-carboxaldehyde
Synonyms   Articles   Notes   Search   Top
Physical Properties:
Appearance: colorless to pale yellow clear liquid (est)
Assay: 99.00 to 100.00 % sum of isomers
Food Chemicals Codex Listed: No
Specific Gravity: 0.95000 to 0.95700 @  25.00 °C.
Pounds per Gallon - (est).: 7.905 to  7.963
Refractive Index: 1.47600 to 1.48300 @  20.00 °C.
Boiling Point: 62.00 to  63.00 °C. @ 3.00 mm Hg
Boiling Point: 211.00 to  212.00 °C. @ 760.00 mm Hg
Vapor Pressure: 0.176000 mm/Hg @ 25.00 °C. (est)
Flash Point: 170.00 °F. TCC ( 76.67 °C. )
logP (o/w): 3.100 (est)
Synonyms   Articles   Notes   Search   Top
Organoleptic Properties:
Odor Type: minty
Odor Strength: high ,
recommend smelling in a 10.00 % solution or less
Odor Description:
at 10.00 % in dipropylene glycol. 
tropical saffron herbal clean rose oxide sweet tobacco damascone fruity
Luebke, William tgsc, (2009)
Odor sample from: Treatt PLC
Substantivity: 85 hour(s) at 100.00 %
Synonyms   Articles   Notes   Search   Top
Cosmetic Information:
CosIng: cosmetic data
Cosmetic Uses: perfuming agents
Synonyms   Articles   Notes   Search   Top
CTC Organics
Endeavour Speciality Chemicals
beta-Cyclocitral 95%
Penta International
beta-CYCLOCITRAL, Kosher
SAFC Global
≥90%, Kosher, FG
Odor: fruity; green; minty.
beta-Cyclocitral 95%
≥95%. NI, Kosher
Odor: aromatic/camphor, berry/blackcurrant/raspberry, tea, and mango
Flavor: tropical
Used in chewing gum at 5ppm, frozen/hard confection at 1ppm, desserts and soft confection at 0.5ppm.
Synonyms   Articles   Notes   Search   Top
Safety Information:
Preferred SDS: View
European information :
Most important hazard(s):
Xn - Harmful.
R 20/21/22 - Harmful by inhalation, in contact with skin and if swallowed.
R 26/27/28 - Very toxic by inhalation, in contact with skin and if swallowed.
S 02 - Keep out of the reach of children.
S 20/21 - When using do not eat, drink or smoke.
S 24/25 - Avoid contact with skin and eyes.
S 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S 36/37/39 - Wear suitable clothing, gloves and eye/face protection.
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
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
Not determined
Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined
Synonyms   Articles   Notes   Search   Top
Safety in Use Information:
Category: flavor and fragrance agents
Recommendation for beta-cyclocitral usage levels up to:
  2.0000 % in the fragrance concentrate.
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: 12
Click here to view publication 12
 average usual ppmaverage maximum ppm
baked goods: -0.06000
beverages(nonalcoholic): -0.02000
beverages(alcoholic): --
breakfast cereal: --
cheese: --
chewing gum: -0.50000
condiments / relishes: --
confectionery froastings: -0.05000
egg products: --
fats / oils: --
fish products: --
frozen dairy: --
fruit ices: -0.10000
gelatins / puddings: -0.05000
granulated sugar: --
gravies: --
hard candy: -0.10000
imitation dairy: --
instant coffee / tea: --
jams / jellies: -0.05000
meat products: --
milk products: --
nut products: --
other grains: --
poultry: --
processed fruits: --
processed vegetables: --
reconstituted vegetables: --
seasonings / flavors: --
snack foods: --
soft candy: -0.05000
soups: --
sugar substitutes: --
sweet sauces: --
Synonyms   Articles   Notes   Search   Top
Safety References:
Flavor & Extract Manufacturers Association (FEMA) reference(s):
The FEMA GRAS assessment of alicyclic substances used as flavor ingredients.View pdf
EPI System: View Calculate predicted properties
EPA Substance Registry Services (TSCA): 432-25-7
EPA ACToR: Toxicology Data
National Institute of Allergy and Infectious Diseases: Data
WGK Germany: 3
Chemidplus: 0000432257
Synonyms   Articles   Notes   Search   Top
NIST Chemistry WebBook: Search Inchi
Canada Domestic Sub. List: 432-25-7
Pubchem (cid): 9895
Pubchem (sid): 134974161
Flavornet: 432-25-7
Pherobase Floral: View
Synonyms   Articles   Notes   Search   Top
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): HMDB41011
VCF-Online: VCF Volatile Compounds in Food
ChemSpider: View
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Potential Blenders and core components note
 allyl amyl glycolateFR
 allyl butyrateFL/FR
 allyl cyclohexyl valerateFL
 allyl propionateFL/FR
isoamyl benzoateFL/FR
isoamyl butyrateFL/FR
 amyl isobutyrateFL/FR
isoamyl isobutyrateFL/FR
isoamyl isovalerateFL/FR
isoamyl nonanoateFL/FR
isoamyl octanoateFL/FR
 amyl propionateFL/FR
 apricot isobutyrateFR
 arnica flower oilFR
 benzyl butyrateFL/FR
 benzyl heptanoateFL/FR
 benzyl hexanoateFL/FR
 boronia absoluteFL/FR
 butyl 2-decenoateFL/FR
isobutyl decanoateFL/FR
 butyl isobutyrateFL/FR
 butyl nonanoateFL/FR
isobutyl propionateFL/FR
 champaca absoluteFR
 magnolia flower oilFL/FR
 cherry pentenoateFL/FR
 citronellyl formateFL/FR
 clary sage absoluteFL/FR
 clary sage oil franceFL/FR
 curcuma amada roxb. rhizome oilCS
2-cyclopentyl cyclopentanoneFL/FR
 decen-1-yl cyclopentanoneFL/FR
 diethyl malonateFL/FR
 dimethyl benzyl carbinyl propionateFR
alpha,alpha-dimethyl benzyl isobutyrateFL/FR
 dimethyl succinateFL/FR
2,4-dimethyl thiazoleFL
 ethyl (E)-2-octenoateFL
 ethyl 2-cyclohexyl propionateFR
 ethyl 2-octenoateFL/FR
 ethyl 3-acetoxyhexanoateFL/FR
 ethyl 3,5,5-trimethyl hexanoateFR
 ethyl acetoacetateFL/FR
 ethyl octanoateFL/FR
 fruity cyclopentanoneFR
 furfuryl propionateFL
2-furyl pentyl ketoneFL
 genet absoluteFL/FR
 geranyl formateFL/FR
 geranyl isobutyrateFL/FR
 heptanal cyclic ethylene acetalFR
 heptyl acetateFL/FR
 heptyl butyrateFL/FR
 heptyl isobutyrateFL/FR
 heptyl propionateFL/FR
(E)-2-hexenal diethyl acetalFL
2-hexenal diethyl acetalFL
(E)-3-hexen-1-yl acetateFL/FR
(E)-2-hexen-1-yl formateFL/FR
(E)-2-hexen-1-yl hexanoateFL/FR
(Z)-3-hexen-1-yl hexanoateFL/FR
(Z)-3-hexen-1-yl isobutyrateFL/FR
 hexyl (E)-2-hexenoateFL
 hexyl (E)-tiglateFL/FR
 hexyl acetateFL/FR
 hexyl octanoateFL/FR
 jasmin lactoneFL/FR
 linalyl isovalerateFL/FR
 linalyl valerateFL/FR
 methyl (E)-2-hexenoateFL/FR
 methyl (E)-3-nonenoateFL
 methyl 2-undecynoateFL
 methyl 3-nonenoateFL/FR
 methyl heptanoateFL/FR
alpha-isomethyl ionone (90% min.)FL/FR
 methyl R-3-acetoxyhexanoate 
2-methyl valeraldehydeFL/FR
 nerolidyl isobutyrateFR
 octen-1-yl cyclopentanoneFL/FR
 octyl 2-methyl butyrateFL/FR
 peach cyclopentanoneFR
2-pentyl furanFL/FR
 phenethyl heptanoateFL/FR
 phenethyl isobutyrateFL/FR
2-phenethyl isothiocyanateFL/FR
 phenethyl isovalerateFL/FR
 phenoxyethyl isobutyrateFL/FR
1-phenyl propyl butyrateFL/FR
2-phenyl propyl butyrateFL/FR
3-phenyl propyl cinnamateFL/FR
2-phenyl propyl isobutyrateFL/FR
 pineapple pentenoateFL/FR
 prenyl hexanoateFL/FR
isopropyl 2-methyl butyrateFL/FR
 propyl butyrateFL/FR
 propyl phenyl acetateFL/FR
 propylene acetalFL/FR
 rhubarb undecaneFR
 tea acetateFR
 tetrahydrofurfuryl butyrateFL/FR
 tropical indeneFR
 tropical thiazoleFL/FR
gamma-undecalactone (aldehyde C-14 (so-called))FL/FR
 verbena absolute franceFL/FR
 violet dienyneFR
Synonyms   Articles   Notes   Search   Top
Potential Uses:
 alpine bouquet 
 ash mountain ash berry 
 blossom tropical blossom 
 carrot seedFL/FR
 cassis black currant budFL/FR
 chewing gum 
 chrysanthemum chrysanthemeFR
 clary sageFL/FR
 coconut tropicalFR
 elder flowerFR
 forest pine forestFR
 fruit tropical fruit 
 genet genista broomFR
 ginger whiteFR
 grass sweetFR
 hops houblonFL/FR
 lavender spikeFL/FR
 marigold tageteFL/FR
 meadow countryFR
 melissa balmFL
 passion fruitFR
 pina coladaFR
 reseda mignonetteFR
 tea blackFL
 tea china 
 tea greenFR
 tea herbalFL
 tea lemonFL
 witch hazelFR
 woodruff asperulaFR
 wormwood absinthiumFL/FR
Synonyms   Articles   Notes   Search   Top
Natural Occurrence in: note
GRIN Trop Picture
 cassie absolute @ 0.37%
Data  GC  GRIN Trop Picture
 champaca concrete @ trace%
Data  GC  GRIN Trop Picture
GRIN Trop Picture
 herniaria incana lam. oil greece @ 0.40%
Data  GC  GRIN Trop Picture
GRIN Trop Picture
Synonyms   Articles   Notes   Search   Top
alpha & beta-cyclocitral
1-cyclohexene-1-carboxaldehyde, 2,6,6-trimethyl-
 cyclohexenecarboxaldehyde, 2,6,6-trimethyl-
2,6,6-trimethyl cyclohexene-1-carbaldehyde
Synonyms   Articles   Notes   Search   Top
US Patents: 3,975,310 - Cycloaliphatic unsaturated ketones as odor- and taste-modifying agents
PubMed: Analysis of Five Earthy-Musty Odorants in Environmental Water by HS-SPME/GC-MS.
US Patents: 3,940,499 - Food or flavor containing 2,6,6-trimethyl-1-cyclohexen-1-ylacetaldehyde
PubMed: Characterization of typical taste and odor compounds formed by Microcystis aeruginosa.
PubMed: Carotenoid oxidation products as stress signals in plants.
PubMed: Review of stress specific organelles-to-nucleus metabolic signal molecules in plants.
PubMed: Total synthesis and biological evaluation of an antifungal tricyclic o-hydroxy-p-quinone methide diterpenoid.
PubMed: Off-flavor compounds from decaying cyanobacterial blooms of Lake Taihu.
PubMed: Lactones 43. New biologically active lactones: β-cyclocitral derivatives.
PubMed: Loss of plastoglobule kinases ABC1K1 and ABC1K3 causes conditional degreening, modified prenyl-lipids, and recruitment of the jasmonic acid pathway.
PubMed: Reconsidering the nature and mode of action of metabolite retrograde signals from the chloroplast.
PubMed: Development of models for predicting the predominant taste and odor compounds in Taihu Lake, China.
PubMed: Volatile organic compounds derived from 2-keto-acid decarboxylase in Microcystis aeruginosa.
PubMed: Nonenzymic carotenoid oxidation and photooxidative stress signalling in plants.
PubMed: Treatment with algae extracts promotes flocculation, and enhances growth and neutral lipid content in Nannochloropsis oculata--a candidate for biofuel production.
PubMed: Carotenoid oxidation products are stress signals that mediate gene responses to singlet oxygen in plants.
PubMed: Characterization of intracellular & extracellular algae organic matters (AOM) of Microcystic aeruginosa and formation of AOM-associated disinfection byproducts and odor & taste compounds.
PubMed: Microwave-assisted purge-and-trap extraction device coupled with gas chromatography and mass spectrometry for the determination of five predominant odors in sediment, fish tissues, and algal cells.
PubMed: The management of undesirable cyanobacteria blooms in channel catfish ponds using a constructed wetland: Contribution to the control of off-flavor occurrences.
PubMed: Degradation and formation of wood odorant β-cyclocitral during permanganate oxidation.
PubMed: Simultaneous determination of eight common odors in natural water body using automatic purge and trap coupled to gas chromatography with mass spectrometry.
PubMed: β-cyclocitral, a grazer defence signal unique to the cyanobacterium Microcystis.
PubMed: A systematic study on spatial and seasonal patterns of eight taste and odor compounds with relation to various biotic and abiotic parameters in Gonghu Bay of Lake Taihu, China.
PubMed: Kinetics of cell lysis for Microcystis aeruginosa and Nitzschia palea in the exposure to β-cyclocitral.
PubMed: Analytical aspects of cyanobacterial volatile organic compounds for investigation of their production behavior.
PubMed: Carotenoid content impacts flavor acceptability in tomato (Solanum lycopersicum).
PubMed: {beta}-Apocarotenoids do not significantly activate retinoic acid receptors {alpha} or {beta}.
PubMed: Blue color formation of cyanobacteria with beta-cyclocitral.
PubMed: Disinfection by-products from halogenation of aqueous solutions of terpenoids.
PubMed: Metabolite and target transcript analyses during Crocus sativus stigma development.
PubMed: A very efficient route toward the 4a-methyltetrahydrofluorene skeleton: short synthesis of (+/-)-dichroanone and (+/-)-taiwaniaquinone H.
PubMed: Occurrence of dissolved and particle-bound taste and odor compounds in Swiss lake waters.
PubMed: [Ozonation of odorous organic compounds in eutrophic water].
PubMed: The degradation of (all-E)-beta-carotene by cigarette smoke.
PubMed: Global sensitivity analysis for model-based prediction of oxidative micropollutant transformation during drinking water treatment.
PubMed: Lysis of cyanobacteria with volatile organic compounds.
PubMed: Synthesis, antimicrobial and antineoplastic activities for agelasine and agelasimine analogs with a beta-cyclocitral derived substituent.
PubMed: Studies on the aroma of maté (Ilex paraguariensis St. Hil.) using headspace solid-phase microextraction.
PubMed: Annual dynamics and origins of the odorous compounds in the pilot experimental area of Lake Dianchi, China.
PubMed: Daphnia behavioural responses to taste and odour compounds: ecological significance and application as an inline treatment plant monitoring tool.
PubMed: Fibrillin influence on plastid ultrastructure and pigment content in tomato fruit.
PubMed: Dunaliella salina microalga pressurized liquid extracts as potential antimicrobials.
PubMed: Efficient route to 4a-methyltetrahydrofluorenes: a total synthesis of (+/-)-dichroanal B via intramolecular Heck reaction.
PubMed: Generation of aroma compounds from Ditaxis heterantha by Saccharomyces cerevisiae.
PubMed: Carotenoid pigmentation affects the volatile composition of tomato and watermelon fruits, as revealed by comparative genetic analyses.
PubMed: Identification and aroma impact of norisoprenoids in orange juice.
PubMed: Volatile organic compound (VOC) analysis and sources of limonene, cyclohexanone and straight chain aldehydes in axenic cultures of Calothrix and Plectonema.
PubMed: Beta-carotene cleavage products after oxidation mediated by hypochlorous acid--a model for neutrophil-derived degradation.
PubMed: A peroxidase from Lepista irina cleaves beta,beta-carotene to flavor compounds.
PubMed: Cleavage of beta,beta-carotene to flavor compounds by fungi.
PubMed: Effect of high irradiance and iron on volatile odour compounds in the cyanobacterium Microcystis aeruginosa.
PubMed: Synthesis of 9E- and 9Z-locked retinoic acid analogs as ligands for RAR and RXR.
PubMed: Volatile organic chemicals of a shore-dwelling cyanobacterial mat community.
PubMed: Dynamics of the volatile organic substances associated with cyanobacteria and algae in a eutrophic shallow lake.
PubMed: Studies on vitamin A and its related compounds. II. Reformatsky reaction of beta-cyclocitral with methyl gamma-bromosenecioate.
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click on the picture(s) below to
interact with the 3D model
Picture of molecule
Soluble in:
 water, 86.14 mg/L @ 25 °C (est)
Insoluble in:
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