4-(Dimethylamino)-2-butenoic acid hydrochloride
4-(Dimethylamino)-2-butenoic acid hydrochloride (CAS 98548-81-3) is an organic compound with the formula C6H11NO2 · HCl. It presents as a hydrochloride salt of an unsaturated amino acid, possessing an alkene and a tertiary amine functional group. This chemical serves as a valuable building block in organic synthesis, particularly in the development of novel compounds for research and development purposes within the chemical industry.
- IUPAC
- 4-Dimethylamino crotonic acid hydrochloride

Organic Synthesis Intermediate
Serves as a versatile building block in the synthesis of more complex organic molecules. Its functional groups allow for various chemical transformations.
Research and Development
Utilised in laboratory settings for the exploration of new chemical entities and reaction pathways. Useful in academic and industrial R&D departments.
Amine Salt Chemistry
As an amine salt, it can participate in reactions characteristic of both amines and carboxylic acids, offering diverse synthetic possibilities.
| Molecular weight | 165.62 |
|---|---|
| Empirical formula | C6H11NO2 · HCl |
| Assay | 97% |
| Melting point | 157-162 °C |

Hazard statements
- H319Causes serious eye irritation
Precautionary statements
- P305IF IN EYES
| Water hazard class (WGK, DE) | 3 |
|---|---|
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36 |
| 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-(Dimethylamino)-2-butenoic acid hydrochloride used for?
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4-(Dimethylamino)-2-butenoic acid hydrochloride is primarily used as a building block in organic synthesis and in research and development laboratories for the creation of novel chemical compounds.
What is the CAS number and formula for 4-(Dimethylamino)-2-butenoic acid hydrochloride?
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The CAS number is 98548-81-3 and the formula is C6H11NO2 · HCl.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-(Dimethylamino)-2-butenoic acid hydrochloride with an assay of 97%. We do not represent this product as USP, BP, or EP grade.
What are the safety considerations when handling this chemical?
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This compound is classified with GHS07 symbol and a Warning signal word. It causes serious eye irritation (H319). Handle with appropriate personal protective equipment to avoid contact and inhalation.
How is 4-(Dimethylamino)-2-butenoic acid hydrochloride packed and shipped?
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Tech Serve Solutions specialises in the global export of fine chemicals, pharmaceutical intermediates, and laboratory reagents, ensuring appropriate packaging and adherence to shipping regulations.
How can I request a sample or quote for 4-(Dimethylamino)-2-butenoic acid hydrochloride?
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To request a sample or a quote, please contact our sales team through the website or by phone, providing your specific requirements.
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