4-Nitroguaiacol
4-Nitroguaiacol (CAS: 3251-56-7), with the chemical formula O2NC6H3(OCH3)OH and a molecular weight of 169.13 g/mol, is a chemical compound used in various laboratory applications. It is recognised for its role in cell biology and histology staining procedures. Available from Tech Serve Solutions, this compound is supplied with a guaranteed assay of 97% purity.
- IUPAC
- 2-Methoxy-4-nitrophenol
- Synonyms
- 2-Methoxy-4-nitrophenol

Histological Staining
4-Nitroguaiacol serves as a reagent in histological staining techniques. It is employed to visualise cellular structures, aiding in microscopic examination and analysis within biological research.
Cell Biology Research
In cell biology, this compound can be used in specific staining protocols to differentiate or identify cellular components. Its properties make it useful for laboratory investigations at the cellular level.
Diagnostic Reagent
As a chemical intermediate, 4-Nitroguaiacol may find application in the development and manufacturing of diagnostic reagents. Its specific chemical structure lends itself to further synthetic modifications.
| Molecular weight | 169.13 |
|---|---|
| Linear formula | O2NC6H3(OCH3)OH |
| Assay | 97% |
| Melting point | 102-104 °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 |
|---|---|
| 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 4-Nitroguaiacol used for?
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4-Nitroguaiacol (CAS: 3251-56-7) is primarily used in histological and cell biology applications as a staining reagent. It may also serve as a chemical intermediate in the synthesis of other compounds.
What are the CAS number and chemical formula for 4-Nitroguaiacol?
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The CAS number for 4-Nitroguaiacol is 3251-56-7, and its chemical formula is O2NC6H3(OCH3)OH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Nitroguaiacol with an assay of 97% purity. We do not represent this product as meeting USP, BP, or EP pharmacopoeial standards.
What are the main safety hazards associated with 4-Nitroguaiacol?
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4-Nitroguaiacol is a warning substance that may cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Appropriate personal protective equipment, including a dust mask (N95), eyeshields, and gloves, should be used during handling.
Is 4-Nitroguaiacol typically shipped internationally?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including 4-Nitroguaiacol, and can accommodate international shipping requests.
How can I request a quote or sample for 4-Nitroguaiacol?
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To request a quote or sample for 4-Nitroguaiacol, please contact our sales department through the provided channels on our website.
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