2,2-Dimethyl-4-pentenoic acid
2,2-Dimethyl-4-pentenoic acid (CAS 16386-93-9) is a C7 carboxylic acid with the linear formula H2C=CHCH2C(CH3)2CO2H and a molecular weight of 128.17 g/mol. This organic building block features both a carboxylic acid group and a terminal alkene functionality, making it a versatile intermediate in organic synthesis. It is primarily utilised in chemical synthesis, serving as a valuable reagent for introducing specific structural motifs into more complex molecules.
- Synonyms
- H2C=CHCH2C(CH3)2CO2H

Organic Synthesis Intermediate
As a bifunctional molecule, 2,2-Dimethyl-4-pentenoic acid serves as a key building block in the synthesis of diverse organic compounds. Its carboxylic acid and alkene groups allow for participation in a variety of chemical transformations.
Research and Development
This compound is employed in laboratory settings for research purposes, aiding in the exploration of new synthetic pathways and the development of novel materials or chemical entities.
Fine Chemical Production
It is used in the production of fine chemicals, where its specific structure is required for creating speciality chemicals and advanced intermediates for various industries.
| Molecular weight | 128.17 |
|---|---|
| Linear formula | H2C=CHCH2C(CH3)2CO2H |
| Assay | 95% |
| Boiling point | 104-108 °C/20 mmHg(lit.) |
| Density | 0.933 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.431(lit.) |

Hazard statements
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 88 °C / 190.4 °F |
| Transport (UN / ADR) | UN 3265 8 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 34 |
| Safety statements (S) | 26-27-36/37/39-45 |
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 2,2-Dimethyl-4-pentenoic acid used for?
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2,2-Dimethyl-4-pentenoic acid is primarily used as an intermediate in organic synthesis and for research and development purposes in chemical laboratories.
What is the CAS number and molecular formula for 2,2-Dimethyl-4-pentenoic acid?
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The CAS number is 16386-93-9 and the molecular formula is H2C=CHCH2C(CH3)2CO2H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2,2-Dimethyl-4-pentenoic acid with an assay of 95%. We do not represent this product as USP, BP, or EP grade.
How should 2,2-Dimethyl-4-pentenoic acid be handled safely?
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This compound is classified as Danger with hazard statement H314 (Causes severe skin burns and eye damage). Appropriate personal protective equipment, including face shields, goggles, gloves, and suitable respirators, must be used during handling. Refer to the Safety Data Sheet for detailed instructions.
Is 2,2-Dimethyl-4-pentenoic acid a controlled substance?
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The provided data does not indicate that 2,2-Dimethyl-4-pentenoic acid is a controlled substance.
How is 2,2-Dimethyl-4-pentenoic acid packed, shipped, and exported?
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2,2-Dimethyl-4-pentenoic acid is packed and shipped according to international regulations for hazardous materials. Tech Serve Solutions exports this chemical globally.
How can I request a quote or sample for 2,2-Dimethyl-4-pentenoic acid?
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To request a quote or sample, please contact our sales department via the website or provide your details through the product enquiry form.
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