4-(4-Hydroxymethyl-3-methoxyphenoxy)butyric acid
4-(4-Hydroxymethyl-3-methoxyphenoxy)butyric acid (CAS: 136849-75-7; Formula: C12H16O5; Molar Mass: 240.25 g/mol) is a valuable organic compound featuring both carboxylic acid and hydroxymethyl functionalities. This bifunctional nature makes it suitable for applications in chemical synthesis, particularly in the construction of complex molecules and as a linker. Supplied by Tech Serve Solutions, it meets high purity standards for research and development purposes.
- IUPAC
- HMPB

Chemical Synthesis Intermediate
This compound serves as a versatile intermediate in organic synthesis due to its distinct functional groups. It can be utilised in reactions requiring either the carboxylic acid or the benzylic alcohol moiety, enabling the construction of more complex molecular architectures.
Bifunctional Linker
With both a reactive carboxylic acid and a hydroxymethyl group, 4-(4-Hydroxymethyl-3-methoxyphenoxy)butyric acid is an effective bifunctional linker. It can be employed to connect different molecular entities in fields such as chemical biology and materials science.
Research and Development
Its specific structure lends itself to exploration in academic and industrial research settings. The compound can be used in probing reaction mechanisms, developing new synthetic methodologies, or as a building block for novel compounds.
| Molecular weight | 240.25 |
|---|---|
| Empirical formula | C12H16O5 |
| Assay | ≥98.0% (HPLC) |
| Impurities tested | ≤5% water |
| Melting point | 80-90 °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) | 26-36 |
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-(4-Hydroxymethyl-3-methoxyphenoxy)butyric acid used for?
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4-(4-Hydroxymethyl-3-methoxyphenoxy)butyric acid is primarily used as an intermediate in chemical synthesis and as a bifunctional linker in research and development, particularly in chemical biology and materials science.
What are the CAS number and formula for 4-(4-Hydroxymethyl-3-methoxyphenoxy)butyric acid?
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The CAS number is 136849-75-7, and the empirical formula is C12H16O5.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-(4-Hydroxymethyl-3-methoxyphenoxy)butyric acid with an assay of ≥98.0% (HPLC), containing ≤5% water. We do not represent this product as USP, BP, EP, or for nutraceutical or food use.
How should 4-(4-Hydroxymethyl-3-methoxyphenoxy)butyric acid be handled?
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This compound is classified as a Warning and may cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Handle with appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, and gloves. Ensure adequate ventilation and avoid breathing dust.
Is 4-(4-Hydroxymethyl-3-methoxyphenoxy)butyric acid a controlled substance?
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Based on the provided data, there is no indication that 4-(4-Hydroxymethyl-3-methoxyphenoxy)butyric acid is a controlled substance.
How is 4-(4-Hydroxymethyl-3-methoxyphenoxy)butyric acid typically packed and exported?
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Tech Serve Solutions exports chemicals in compliance with international shipping regulations. Specific packing details are confirmed at the time of order.
How can I request a quote or sample for 4-(4-Hydroxymethyl-3-methoxyphenoxy)butyric acid?
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Please contact our sales department via the website or direct email to request a quote or sample. Provide your contact details and the product CAS number (136849-75-7).
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