Molekula
3-Methyl-2-butenal
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Certificate of Analysis with every batch
3-Methyl-2-butenal is an unsaturated aldehyde with a strong malty, green apple aroma, widely used in flavors and fragrances to impart fruity, green, and fresh notes in food, beverages, and perfumes. It is also a building block for producing citral and related chemicals, and is used to recreate essential oils and other natural products in formulation work. It appears as a colorless to pale yellow liquid with a pungent odor. CAS 107-86-8, molecular formula (CH3)2C=CHCHO, molecular weight 84.12. Store at 2 to 8°C in a cool, dark place. Hazardous—handle with care; signal word is **Danger**. Molekula supplies 3-Methyl-2-butenal from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
This substance is available from Molekula on enquiry. Full specification, Safety Data Sheet and Certificate of Analysis documentation are provided with your quotation once our team confirms the grade and pack size you need.
Overview
- SKU
- 42018977
- CAS Number
- 107-86-8
- IUPAC Name
- 3-methylbut-2-enal
- EC Number
- 203-527-6
- Molecular Formula
- (CH3)2C=CHCHO
- Molecular Weight
- 84.12
- Exact Mass
- 84.0575
- SMILES
- CC(=CC=O)C
- InChIKey
- SEPQTYODOKLVSB-UHFFFAOYSA-N
- InChI
- InChI=1S/C5H8O/c1-5(2)3-4-6/h3-4H,1-2H3
- PubChem CID
- 61020
Synonyms
- 2-BUTENAL, 3-METHYL-
- 3-Methylbut-2-enal
- 3-Methylcrotonaldehyde
- 3,3-Dimethyl-acrylaldehyde
- 3,3-Dimethylacrolein
- beta-Methylcrotonaldehyde
- beta,beta-Dimethylacrolein
- Crotonaldehyde, 3-methyl-
- Senecialdehyde
- Senecioaldehyde
Literature values
Published physical properties of the substance, not batch specifications.
- Melting Point
- -20 °C
- Boiling Point
- 136 °C
- Vapour Pressure
- 0.75 kPa at 20 °C
Source: PubChem CID 61020 (ICSC)
Frequently asked questions
What is 3-Methyl-2-butenal commonly used for?
3-Methyl-2-butenal is primarily used as a flavor and fragrance compound, contributing to malty, fruity, and green notes in food, beverages, and perfumes.
What is the chemical formula and molecular weight of 3-Methyl-2-butenal?
The chemical formula is **(CH₃)₂C=CHCHO**, and the molecular weight is **84.12 g/mol**.
What safety classification does 3-Methyl-2-butenal have?
The product is labeled with the **signal word 'Danger'** due to its hazardous properties.
How should 3-Methyl-2-butenal be stored?
Store at **2–8°C** in a cool, dry place, away from heat, sparks, and open flames.
Does Molekula offer 3-Methyl-2-butenal in bulk quantities?
Yes, Molekula can supply **3-Methyl-2-butenal in bulk**—please contact us for custom packaging options.
What documentation comes with an order of 3-Methyl-2-butenal?
Each order includes a **Certificate of Analysis (CoA), Safety Data Sheet (SDS), and batch-specific documentation** for traceability.
Related products
Molekula has supplied fine chemicals and biochemicals since 1999, and its facilities are ISO 9001:2015 and ISO 14001:2015 certified. Every dispatched batch is logged with a batch number and matched to a Certificate of Analysis, and Safety Data Sheets are available in five languages.