3-Methoxycatechol
3-Methoxycatechol (CAS 934-00-9), with the molecular formula CH3OC6H3(OH)2 and a molecular weight of 140.14 g/mol, is a valuable organic building block. This compound, also known as 3-methoxypyrocatechol, is characterised by its catechol structure with a methoxy group. It serves as a key intermediate in the synthesis of various organic molecules and finds application in chemical research and development.
- IUPAC
- 1,2-Dihydroxy-3-methoxybenzene,3-Methoxypyrocatechol,Pyrogallol monomethyl ether
- Synonyms
- 1,2-Dihydroxy-3-methoxybenzene3-MethoxypyrocatecholPyrogallol monomethyl ether

Organic Synthesis Intermediate
3-Methoxycatechol is utilised as a precursor in the multi-step synthesis of complex organic molecules. Its functional groups allow for diverse chemical transformations, making it a versatile building block for researchers.
Research and Development
This compound is employed in laboratory settings for exploratory chemistry and the development of novel compounds. Its specific structure makes it relevant for investigating new reaction pathways or creating target molecules.
Specialty Chemical Production
It can be used in the production of fine chemicals and specialty intermediates where the 1,2-dihydroxy-3-methoxybenzene moiety is required.
| Molecular weight | 140.14 |
|---|---|
| Linear formula | CH3OC6H3(OH)2 |
| Assay | 99% |
| Boiling point | 146-147 °C/15 mmHg(lit.) |
| Melting point | 38-43 °C(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 | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| 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) | 26-36 |
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 3-Methoxycatechol used for?
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3-Methoxycatechol is primarily used as an intermediate in organic synthesis and in research and development for creating complex organic molecules and investigating new chemical pathways.
What are the CAS number and chemical formula for 3-Methoxycatechol?
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The CAS number is 934-00-9 and the chemical formula is CH3OC6H3(OH)2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Methoxycatechol with an assay of 99%. We do not represent this product as USP, BP, or EP grade.
What are the main safety hazards associated with 3-Methoxycatechol?
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3-Methoxycatechol is classified with the GHS07 symbol and carries a Warning signal word. It causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Appropriate personal protective equipment, including a dust mask (N95), eyeshields, and gloves, should be used.
How is 3-Methoxycatechol shipped or exported?
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Tech Serve Solutions is a global supplier and exporter of fine chemicals, including 3-Methoxycatechol, adhering to all relevant shipping and export regulations.
How can I request a quote or sample of 3-Methoxycatechol?
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To request a quote or sample of 3-Methoxycatechol, please contact our sales department through the website or designated contact channels.
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