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3,4-dimethyl-1,2-cyclopentadione
Notes:
Constit. of coffee. Flavouring additive with sugary/maple/caramel taste
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Beijing Lys Chemicals Co, LTD. From Grams to Tons Fine chemical high-tech company which contains R&D, production, and sales. BEIJING LYS CHEMICALS CO, LTD, established in 2004, is a fine chemical high-tech company which contains R&D, production, and sales. We mainly engaged in export and technology development of flavor and fragrance materials and pharmaceutical intermediates. We have nearly 500 kinds of products, from grams to tons, exported to USA, Europe, South Asia and etc. And we custom manufacture new products according to customers’ needs, and serve good quality products and service. Our goal is to become a fine chemical enterprise which could provide special products and services. Email: Mr. Jia Email: Mr. Guo Voice: 86-10-68418738 Fax: 86-10-68418739 Mr. Guo 86-10-68483445 Mr. Guo 86-10-68418739 News Product(s): 10639 3,4-Dimethyl-1,2-cyclopentadione
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BOC Sciences Best of Chemicals Supplier Quality supplier of research chemicals and biochemicals including inhibitors, building blocks, GMP Products, impurities and metabolites, APIs for Veterinary, Natural Compounds, ADCs, Stem Cell Molecule and chiral compounds. BOC Sciences provides a wide range of services to support the pharmaceutical industry through all stages of drug discovery including Custom Synthesis of those chemicals that are not in stock, Isotope Labeling Service, Chiral Synthesis and Resolution, Bioconjugation, PEGylation services, analytical services. BOC Sciences is a brand of BOCSCI Inc. We leverage our wide spectrum of business in the fields of development, manufacturing, marketing, and distribution to help you make best-informed decisions tailored to your evolving needs for premium chemicals. Our complete suite of CRO services spans the entire molecule development pipeline including contract research for target identification, building blocks, compound synthesis, biochemical and cellular analysis, preclinical animal tests, and clinical studies. Email: Marketing US Email: Marketing Email: Sales US Email: Sales Voice: 1-631-485-4226 Fax: 1-631-614-7828 US Voice: 1-631-485-4226 US Fax: 1-631-614-7828 Europe 44-203-286-1088 Facebook Twitter Linkedin Blog Get the App! Product(s): 13494-06-9 3,4-Dimethyl-1,2-Cyclopentanedione
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Indukern, S.A. F&F Ingredients Division Commitment to quality Idukern F&F Ingredients is your partner for the fragrance and flavor ingredients. Indukern F&F focuses in particular on the service it offers its clients in terms of quality, speed and direct consultancy with more than 1600 different products in stock ready for prompt shipment: Aromachemicals, Essential Oils and Natural Isolates. Email: Info Email: Luciana Soares (Brazil) Email: Gabriela Garcia (Mexico) Email: Jorge Eduardo Clavijo (Colombia) Voice: +34 93 506 91 00 Fax: +34 93 506 91 95 Services Quality Facilities Products List: View Product(s): METHYL CORYLONE
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Lluch Essence S.L. A family company dedicated to sales and distribution Flexibility, availability, price and quality. Flexibility, availability, price and quality make LLUCH ESSENCE S.L. one of Europe’s references when it comes to essential oils and aroma chemicals, and it is now well known all around the world. Email: Info Voice: 34 93 379 38 49 Fax: 34 93 370 65 04 Linkedin Product(s): 3,4-DIMETHYL 1,2-CICLOPENTADIONE
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M&U International LLC Steady supply & demand Meeting customers increasing demands at home as well as abroad. M&U dedicates itself to the development and production of new products as well as continuously promoting those new products. We’ve maintained a steady supply&demand relationship with a large number of manufacturers at home and abroad. We’ve developed an extensive network and because of our relationships with these manufacturers, we’re able to provide a stable supply of great quality materials. We’re located in China’s largest communications hub, Shanghai and in the U.S. near one of the largest sea ports on the East Coast. The strategic locations of our facilities ensure convenient, prompt and secure delivery of our products to our customers. Email: Sales US Email: Sales Voice: +86-21-32515501 60762991 60762992 Fax: +86-21-32515502 64204960 US Voice: 908-359-9000 US Fax: 908-359-9002 News Product(s): H0177 3,4-DIMETHYL-2-HYDROXY-2-CYCLOPENTENYL-1-ONE, Kosher
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Moellhausen S.P.A. THE CHEMISTRY OF EMOTIONS Innovation and commitment in the name of excellence. After 50 years in business, Moellhausen stands out as one of the world’s leading family-run companies in the industry of flavors and fragrances, raw materials, and specialties. Voice: +39 039.685.6262 Fax: +39 039.685.6263 Facebook Twitter Linkedin Youtube A network of knowledge to grow together Sustainability is at the foundation of a Pervasive technology and total control Product(s): 1000644 CARAMEL PENTADIONE
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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 Product(s): 04-44600 3,4-DIMETHYL-1,2-CYCLOPENTADIONE 04-44611 3,4-DIMETHYL-1,2-CYCLOPENTADIONE NATURAL 1% IN ETHYL ALCOHOL 04-44615 3,4-DIMETHYL-1,2-CYCLOPENTADIONE NATURAL 5% IN ETHYL ALCOHOL 04-44612 3,4-DIMETHYL-1,2-CYCLOPENTADIONE NATURAL 1% IN P.G. 04-44613 3,4-DIMETHYL-1,2-CYCLOPENTADIONE NATURAL 1% IN TRIACETIN 04-44616 3,4-DIMETHYL-1,2-CYCLOPENTADIONE NATURAL 5% IN TRIACETIN
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Sigma-Aldrich 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 Facebook Twitter Instagram Linkedin Flavors and Fragrances Analysis FandF Newsletter Subscription Flavors and Fragrances Learning Center Certified Food Grade Products Product(s): W326801 3,4-Dimethyl-1,2-cyclopentadione, ≥97%, FG SDS
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Sunaux International Buy With Confidence We have industry leading processes and procedures to ensure nothing but the most reliable product. Sunaux International was founded in 2012 by the owner Mr.John Felton after spending 18 years involved in developing global business in the aromatic chemicals, fragrance and flavour compounds business. Email: John Felton Email: Stephen Zhou (Sales) Voice: 0512-57995626 Fax: 0512-57570299 Sales 0512-57995626 Sales 0512-57570299 News Product(s): H0177 3,4-Dimethyl-2-hydroxy-2-cyclopentenyl-1-one
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Synerzine, Inc. Innovation. Customization. Aroma Ingredients. Synerzine is a leading supplier of flavor and fragrance ingredients. Synerzine expresses what we have grown to embody as an organization - the synergy and connection between raw ingredients, science, technology, and the final product. Our experienced team is passionate about bringing our customers high-quality innovative ingredients that they can trust. Building upon our 44 year history, the Synerzine team provides customers around the globe with convenient access to over 1200 high-quality aroma ingredients. We actively engage with customers to add a wide array of new products and services on a regular basis. Our aim is to delight every customer with our exceptional services, large product selection, customization and the highest quality and safety standards. We provide our customers with true value designed to help them bring their products to market faster. US Email: Customer Service US Email: Sales US Voice: (404) 524-6744 US Fax: (404) 577-1651 Inquiry Products List: View Product(s): W0409 3,4-Dimethyl-1,2-cyclopentadione
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TCI AMERICA Moving Your Chemistry Forward We continuously strive to advance our technology. With East & West Coast distribution centers, count on TCI to deliver products quickly and reliably. Over 30,000 Reagents available today in benchtop to bulk quantities. We also offer custom synthesis solutions. Sign up for a TCI account today for fast and free shipping! Tokyo Chemical Industry Co., Ltd. (TCI) is a leading worldwide manufacturer of specialty organic chemicals founded in 1946. TCI provides organic laboratory chemicals as well as pharmaceutical, cosmetic and functional materials. More than 70 years of synthesis experience and multi-purpose plants enable TCI to offer more than 30,000 products as well as custom synthesis. US Email: Sales Email: Technical Support Voice: 1-800-423-8616 Fax: 1- 888-520-1075 Facebook Twitter Instagram Linkedin Product(s): D3782 3,4-Dimethyl-1,2-cyclopentanedione >98.0%(T)
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Tianjin Danjun International Trade Co., LTD. Quality Products We know the Chinese chemical market well. Tianjin danjun international trade co., LTD. is an organic chemicals trading company approved by the relevant state authorities to register. We have about 300 kinds of products (natural aroma chemicals, synthetic aroma chemicals and pharmaceutical intermediates). Most of the products are used in flavor and fragrance industry. We know the Chinese chemical market well and we have close relationship with many of the main manufacturers, and to provide our customers with quality goods together with comprehensive service. Email: Info Email: Sales Voice: +86-15822601686 Products List: View Product(s): A-014 3,4-Dimethyl-1,2-cyclopentadione
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R C Treatt and Co Ltd Innovative ingredient solutions World-leading innovative ingredient solutions provider for the flavour, fragrance and FMCG industries. We offer innovative and trend-setting product concepts for our customers, collaborating with them to create true value for their products. 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 Twitter Linkedin Youtube News Product(s): 3,4-Dimethyl-1,2-cyclopentadione Halal, Kosher
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Qingdao Free Trade Zone United International Co Ltd Quality Products A partner in your supply chain solution. Qingdao Free Trade Zone United International Trade Co., Ltd.was founded in 1996, specializing in the production and import and export of food additives,flavor raw materials and pharmaceutical and chemical raw materials. The company has experienced R&D and business personnel,product quality, low price, efficient service and fast insight and grasp the latest market information. Email: Info Email: Sales Voice: +86-532-83893699 Fax: +86-532-83893695 Product(s): 9034 3,4-Dimethyl-2-Hydroxy-2-Cyclopentenyl-1-One
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Ernesto Ventós S.A. Leaders in essence We employ our five senses to do our job well. Ventos has specialized in the distribution of raw materials for the flavour and fragrance industry. With more than 1700 references permanently available from stock, we offer a just-in-time response to our customer needs, being able to deliver from 1kg to several tonnes all over the world. Email: Information US Email: Information USA Email: Gemma Parramon (Europe) US Email: Gemma Parramon (Europe) Email: Jorge Sos (Asia) Email: Ramon Rubau (America) Voice: +34 934706210 Fax: +34 934733010 US Voice: +1 856 226 7501 Instagram Linkedin Youtube Press Ads Videos Product(s): 3,4-DIMETHYL-1,2-CYCLOPENTADIONE
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Vigon International Passion for Simplicity Manufacturer and supplier of high quality flavor and fragrance ingredients. The growth and success of Vigon is due in large part to a unique corporate concept that Vigon has developed and established within the industry: Creative Partnerships. This partnership concept has been and continues to be the foundation and guiding principle for all of Vigon's activities. US Email: Sales US Voice: 570-476-6300 US Fax: 570-476-1110 Facebook Twitter Linkedin Newsletter Blog Products List: View Product(s): 501361 Dimethyl-3,4 1,2-Cyclopentadione (Methyl Corylone)
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WholeChem, LLC Connecting Innovators To the Building Blocks Of the Universe Custom manufacturer and distributor of specialty ingredients. We make global local. SQF-Certified Supplier We owe our success to our integrity, our dedication to the industry, and our commitment to our clients. We invite your inquiries regarding our current product list and any other products you may be having trouble sourcing. Email: Info Email: Orders Voice: +1 (262) 995.8668 Certification Our Services Products List: View Product(s): 3,4-Dimethyl-1,2-cyclopentadione
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| Flavor Demo Formulas | ||
| CAS Number: | 13494-06-9 |  3D/inchi
|
| Other(deleted CASRN): | 825650-60-0 | |
| ECHA EINECS - REACH Pre-Reg: | 236-810-8 | |
| FDA UNII: | 50AIF51OCI | |
| Nikkaji Web: | J241.145H | |
| MDL: | MFCD00143063 | |
| CoE Number: | 2234 | |
| XlogP3-AA: | 0.60 (est) | |
| Molecular Weight: | 126.15510000 | |
| Formula: | C7 H10 O2 | |
| NMR Predictor: | Predict (works with chrome, Edge or firefox) | |
| CAS Number: | 13494-06-9 (RR) |  3D/inchi
|
| FDA UNII: | Search | |
| XlogP3-AA: | 0.60 (est) | |
| Molecular Weight: | 126.15510000 | |
| Formula: | C7 H10 O2 | |
| NMR Predictor: | Predict (works with chrome, Edge or firefox) | |
| CAS Number: | 13494-06-9 (RS) |  3D/inchi
|
| FDA UNII: | Search | |
| XlogP3-AA: | 0.60 (est) | |
| Molecular Weight: | 126.15510000 | |
| Formula: | C7 H10 O2 | |
| NMR Predictor: | Predict (works with chrome, Edge or firefox) | |
| CAS Number: | 13494-06-9 (SR) |  3D/inchi
|
| FDA UNII: | Search | |
| XlogP3-AA: | 0.60 (est) | |
| Molecular Weight: | 126.15510000 | |
| Formula: | C7 H10 O2 | |
| NMR Predictor: | Predict (works with chrome, Edge or firefox) | |
| CAS Number: | 13494-06-9 (SS) |  3D/inchi
|
| FDA UNII: | Search | |
| XlogP3-AA: | 0.60 (est) | |
| Molecular Weight: | 126.15510000 | |
| Formula: | C7 H10 O2 | |
| NMR Predictor: | Predict (works with chrome, Edge or firefox) | |
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 |
| Pubchem Patents: | Search |
| PubMed: | Search |
| NCBI: | Search |
| JECFA Food Flavoring: | 420 3,4-dimethyl-1,2-cyclo-pentanedione |
| DG SANTE Food Flavourings: | 07.075 3,4-dimethylcyclopentane-1,2-dione |
| FEMA Number: | 3268 3,4-dimethyl-1,2-cyclopentadione |
| FDA: | No longer provide for the use of these seven synthetic flavoring substances |
| FDA Mainterm (SATF): | 13494-06-9 ; 3,4-DIMETHYL-1,2-CYCLOPENTADIONE |
Physical Properties:
| Appearance: | white to amber crystals (est) |
| Assay: | 98.00 to 100.00 % |
| Food Chemicals Codex Listed: | No |
| Melting Point: | 68.00 to 72.00 °C. @ 760.00 mm Hg |
| Boiling Point: | 187.37 °C. @ 760.00 mm Hg (est) |
| Vapor Pressure: | 0.633000 mmHg @ 25.00 °C. (est) |
| Flash Point: | > 212.00 °F. TCC ( > 100.00 °C. ) |
| logP (o/w): | 0.796 (est) |
| Soluble in: | |
| alcohol | |
| water, 1.211e+005 mg/L @ 25 °C (est) | |
| Insoluble in: | |
| water | |
| Stability: | |
| stable in most media | |
Organoleptic Properties:
| Odor Type: caramellic | |
| Odor Strength: | high , recommend smelling in a 1.00 % solution or less |
| Substantivity: | 236 hour(s) at 10.00 % in dipropylene glycol |
| sweet maple caramellic sugar fenugreek licorice | |
| Odor Description: at 1.00 % in dipropylene glycol. | sweet maple caramel sugar fenugreek licorice Luebke, William tgsc, (1988) |
| Flavor Type: caramellic | |
| sweet maple fenugreek burnt caramellic sugar burnt sugar resinous phenolic | |
| Taste Description: | sweet maple fenugreek burnt caramellic burnt sugar resinous phenolic Luebke, William tgsc, (1988) |
| Odor and/or flavor descriptions from others (if found). | |
Cosmetic Information:
| CosIng: | cosmetic data |
| Cosmetic Uses: |
perfuming agents |
Suppliers:
Safety Information:
| Preferred SDS: View | |
| European information : | |
| Most important hazard(s): | |
| Xn - Harmful. | |
|
R 22 - Harmful if swallowed. R 36/37/38 - Irritating to eyes, respiratory system, and skin. S 02 - Keep out of the reach of children. 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 | |
| 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: | flavor and fragrance agents | ||
| RIFM Fragrance Material Safety Assessment: Search | |||
| IFRA Code of Practice Notification of the 49th Amendment to the IFRA Code of Practice | |||
| Recommendation for caramel pentadione usage levels up to: | |||
| 1.0000 % in the fragrance concentrate. | |||
| Maximised Survey-derived Daily Intakes (MSDI-EU): | 30.00 (μg/capita/day) | ||
| Maximised Survey-derived Daily Intakes (MSDI-USA): | 2.00 (μg/capita/day) | ||
| Structure Class: | II | ||
| 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: 5 | |||
| Click here to view publication 5 | |||
| average usual ppm | average maximum ppm | ||
| baked goods: | - | - | |
| beverages(nonalcoholic): | - | - | |
| beverages(alcoholic): | - | - | |
| breakfast cereal: | - | - | |
| cheese: | - | - | |
| chewing gum: | - | 1.90000 | |
| condiments / relishes: | - | - | |
| confectionery froastings: | - | - | |
| egg products: | - | - | |
| fats / oils: | - | - | |
| fish products: | - | 3.50000 | |
| frozen dairy: | - | 0.30000 | |
| fruit ices: | - | 0.30000 | |
| gelatins / puddings: | - | - | |
| granulated sugar: | - | - | |
| gravies: | - | - | |
| hard candy: | - | 4.00000 | |
| 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: | - | - | |
| soups: | - | - | |
| sugar substitutes: | - | - | |
| sweet sauces: | - | - | |
Safety References:
| European Food Safety Athority(EFSA): | Flavor usage levels; Subacute, Subchronic, Chronic and Carcinogenicity Studies; Developmental / Reproductive Toxicity Studies; Genotoxicity Studies... |
| European Food Safety Authority (EFSA) reference(s): | |
| Flavouring Group Evaluation 213: alpha,beta-Unsaturated alicyclic ketones and precursors from chemical subgroup 2.7 of FGE.19 View page or View pdf | |
| Scientific Opinion on Flavouring Group Evaluation 213, Revision 2 (FGE.213Rev2): Consideration of genotoxic potential for a,ß-unsaturated alicyclic ketones and precursors from chemical subgroup 2.7 of FGE.19 View page or View pdf | |
| Safety and efficacy of secondary aliphatic saturated or unsaturated alcohols, ketones, ketals and esters with a second secondary or tertiary oxygenated functional group belonging to chemical group 10 when used as flavourings for all animal species View page or View pdf | |
| EPI System: | View |
| AIDS Citations: | Search |
| Cancer Citations: | Search |
| Toxicology Citations: | Search |
| EPA Substance Registry Services (TSCA): | 13494-06-9 |
| EPA ACToR: | Toxicology Data |
| EPA Substance Registry Services (SRS): | Registry |
| Laboratory Chemical Safety Summary : | 61633 |
| National Institute of Allergy and Infectious Diseases: | Data |
| WGK Germany: | 3 |
| 3,4-dimethylcyclopentane-1,2-dione | |
| Chemidplus: | 0013494069 |
| (3R,4R)-3,4-dimethylcyclopentane-1,2-dione | |
| (3R,4S)-3,4-dimethylcyclopentane-1,2-dione | |
| (3S,4R)-3,4-dimethylcyclopentane-1,2-dione | |
| (3S,4S)-3,4-dimethylcyclopentane-1,2-dione | |
References:
| 3,4-dimethylcyclopentane-1,2-dione | |
| NIST Chemistry WebBook: | Search Inchi |
| Canada Domestic Sub. List: | 13494-06-9 |
| Pubchem (cid): | 61633 |
| Pubchem (sid): | 135017184 |
| (3R,4R)-3,4-dimethylcyclopentane-1,2-dione | |
| NIST Chemistry WebBook: | Search Inchi |
| Canada Domestic Sub. List: | 13494-06-9 |
| Pubchem (cid): | 6997363 |
| Pubchem (sid): | 43599222 |
| (3R,4S)-3,4-dimethylcyclopentane-1,2-dione | |
| NIST Chemistry WebBook: | Search Inchi |
| Canada Domestic Sub. List: | 13494-06-9 |
| Pubchem (cid): | 6997362 |
| Pubchem (sid): | 43599221 |
| (3S,4R)-3,4-dimethylcyclopentane-1,2-dione | |
| NIST Chemistry WebBook: | Search Inchi |
| Canada Domestic Sub. List: | 13494-06-9 |
| Pubchem (cid): | 6997365 |
| Pubchem (sid): | 43599224 |
| (3S,4S)-3,4-dimethylcyclopentane-1,2-dione | |
| NIST Chemistry WebBook: | Search Inchi |
| Canada Domestic Sub. List: | 13494-06-9 |
| Pubchem (cid): | 6997364 |
| Pubchem (sid): | 43599223 |
Other Information:
| (IUPAC): | Atomic Weights of the Elements 2011 (pdf) |
| Videos: | The Periodic Table of Videos |
| tgsc: | Atomic Weights use for this web site |
| (IUPAC): | Periodic Table of the Elements |
| FDA Substances Added to Food (formerly EAFUS): | View |
| HMDB (The Human Metabolome Database): | HMDB37026 |
| FooDB: | FDB016006 |
| Export Tariff Code: | 2914.29.0090 |
| VCF-Online: | VCF Volatile Compounds in Food |
| ChemSpider: | View |
Potential Blenders and core components note
Potential Uses:
| butterscotch | FR | |
| caramel | FL | |
| coffee | FR | |
| fenugreek | FL/FR | |
| maple | FR | |
| tobacco | FR | |
| toffee | FR | |
| tonka bean | FR | |
| vanilla | FR |
Occurrence (nature, food, other): note
| bacon cooked bacon Search PMC Picture | |
| coffee Search PMC Picture | |
| tobacco Search Trop Picture |
Synonyms:
| caramel pentadione | |
| 1,2- | cyclopentanedione, 3,4-dimethyl- |
| 3,4- | dimethyl cyclopentane-1,2-dione |
| 3,4- | dimethyl-1,2-cyclo-pentanedione |
| 3,4- | dimethyl-1,2-cyclopentadione |
| 3,4- | dimethyl-1,2-cyclopentadione natural 1% in ethyl alcohol |
| 3,4- | dimethyl-1,2-cyclopentadione natural 5% in ethyl alcohol |
| 3,4- | dimethyl-1,2-cyclopentane dione |
| 3,4- | dimethyl-1,2-cyclopentanedione |
| 3,4- | dimethyl-2-hydroxy-2-cyclopentenyl-1-one |
| dimethyl-3 4 1 2-cyclopentadione | |
| 3,4- | dimethylcyclopentan-1,2-dione |
| 3,4- | dimethylcyclopentane-1,2-dione |
| methyl corylone (Givaudan) |