6-Phenylhexanoic acid
6-Phenylhexanoic acid (CAS: 5581-75-9), with the molecular formula C12H16O2 and a molecular weight of 192.25 g/mol, is a carboxylic acid derivative. This organic compound serves as a valuable building block in chemical synthesis. It is typically supplied at a purity of 98% and is utilised in research and development settings for the creation of more complex molecules.
- IUPAC
- Benzenehexanoic acid
- Synonyms
- Benzenehexanoic acid

Organic Synthesis Intermediate
6-Phenylhexanoic acid functions as a key intermediate in the synthesis of various organic compounds. Its carboxylic acid group allows for diverse chemical transformations, making it useful in constructing complex molecular architectures.
Research and Development
This compound is employed in research laboratories for exploring new synthetic routes and developing novel chemical entities. Its specific structure lends itself to applications in medicinal chemistry and materials science research.
Building Block for Complex Molecules
As a functionalised aliphatic chain attached to a phenyl ring, 6-phenylhexanoic acid is a versatile building block. It can be incorporated into larger molecules through esterification, amidation, or other reactions characteristic of carboxylic acids.
| Molecular weight | 192.25 |
|---|---|
| Linear formula | C6H5(CH2)5CO2H |
| Assay | 98% |
| Boiling point | 201-202 °C/24 mmHg(lit.) |
| Density | 1.022 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.51(lit.) |

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 | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 113 °C / 235.4 °F |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-37/39 |
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 6-Phenylhexanoic acid used for?
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6-Phenylhexanoic acid is primarily used as an intermediate in organic synthesis and for research and development purposes in creating novel chemical entities and complex molecules.
What are the CAS number and chemical formula for 6-Phenylhexanoic acid?
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The CAS number for 6-Phenylhexanoic acid is 5581-75-9, and its chemical formula is C6H5(CH2)5CO2H.
What grade and purity does Tech Serve Solutions supply for 6-Phenylhexanoic acid?
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Tech Serve Solutions typically supplies 6-Phenylhexanoic acid with an assay of 98%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
How should 6-Phenylhexanoic acid be handled safely?
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6-Phenylhexanoic acid is a warning substance (GHS07) that causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Always use appropriate personal protective equipment, including eyeshields and gloves, and ensure adequate ventilation. Avoid breathing dust/fume/gas/mist/vapours/spray.
Is 6-Phenylhexanoic acid available for export?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 6-Phenylhexanoic acid.
How can I request a quote or sample for 6-Phenylhexanoic acid?
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Please contact our sales team through the website or call us to request a quote or a sample of 6-Phenylhexanoic acid.
How is 6-Phenylhexanoic acid synthesized?
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Published preparations of 6-Phenylhexanoic acid are documented in the chemical literature and patent records — see the synthesis and sourcing section on this page for reference links. Tech Serve Solutions supplies 6-Phenylhexanoic acid ready to use; request a quote for current grades and pack sizes.
How 6-Phenylhexanoic acid (5581-75-9) is synthesized — and where to buy it
6-Phenylhexanoic acid is an ω-aryl C6 fatty-acid building block, installing a phenyl-terminated alkyl chain with a carboxylic-acid handle.
Published synthesis & references
Why make it?
Chain-extension sequences cost several steps of routine chemistry. We supply the acid ready to use, assayed with a Certificate of Analysis.
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