4-Amino-3-penten-2-one
4-Amino-3-penten-2-one (CAS: 1118-66-7), with the molecular formula C5H9NO and a molecular weight of 99.13 g/mol, is a versatile organic compound. It functions as a valuable building block in chemical synthesis, particularly within organic chemistry. Its structure, featuring both amine and ketone functionalities, makes it a useful intermediate for creating more complex molecules across various research and industrial applications.
- IUPAC
- Acetylacetonamine

Organic Synthesis Intermediate
4-Amino-3-penten-2-one serves as a key intermediate in the synthesis of diverse organic compounds. Its reactive amine and ketone groups allow for a range of chemical transformations, facilitating the construction of heterocyclic systems and other complex molecular architectures.
Building Block for Novel Compounds
This compound is utilised as a fundamental building block in research and development settings. It enables chemists to introduce specific functional groups into target molecules, aiding in the exploration of new chemical entities for pharmaceutical and material science research.
Reagent in Chemical Reactions
It is employed as a reagent in various chemical reactions due to its bifunctional nature. The compound can participate in condensation reactions, nucleophilic additions, and other transformations critical for synthetic organic chemistry.
| Molecular weight | 99.13 |
|---|---|
| Empirical formula | C5H9NO |
| Assay | ≥96.5% (GC)97% |
| Storage temperature | 2-8°C |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 4-Amino-3-penten-2-one used for?
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4-Amino-3-penten-2-one is primarily used as an intermediate and building block in organic synthesis for creating more complex molecules and as a reagent in chemical reactions.
What are the CAS number and formula for 4-Amino-3-penten-2-one?
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The CAS number for 4-Amino-3-penten-2-one is 1118-66-7, and its molecular formula is C5H9NO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Amino-3-penten-2-one with an assay of ≥96.5% (GC). TSS does not represent this product as USP, BP, EP, or pharmacopoeia grade.
How should 4-Amino-3-penten-2-one be handled safely?
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4-Amino-3-penten-2-one is a Warning substance that causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Use a dust mask type N95 (US), eyeshields, and gloves. Ensure good ventilation. Store at 2-8°C.
Is 4-Amino-3-penten-2-one a controlled substance?
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The provided data does not indicate that 4-Amino-3-penten-2-one is a controlled substance.
How is 4-Amino-3-penten-2-one packed and shipped?
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Tech Serve Solutions exports fine chemicals globally, adhering to all necessary shipping and handling regulations for organic compounds.
How can I request a quote or sample for 4-Amino-3-penten-2-one?
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Please contact our sales department through the website or by phone to request a quotation or a sample of 4-Amino-3-penten-2-one.
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