2,4-Dihydroxypyridine
2,4-Dihydroxypyridine (CAS 626-03-9), a heterocyclic organic compound with the molecular formula C5H5NO2 and a molecular weight of 111.10 g/mol, is supplied by Tech Serve Solutions. This compound, also known by its synonym 3-deazauracil, serves as a valuable building block in chemical synthesis. Its primary applications lie in the development of novel molecular scaffolds and complex organic structures within research and development settings.
- IUPAC
- 2,4-Pyridinediol,3-Deazauracil,4-Hydroxy-2-pyridone
- Synonyms
- 3-Deazauracil2,4-Pyridinediol4-Hydroxy-2-pyridone

Synthesis of Diazaphenoxathiin Skeleton
2,4-Dihydroxypyridine has been utilized as a key intermediate in the synthesis of the diazaphenoxathiin skeleton. This application highlights its utility in constructing complex heterocyclic systems for potential pharmaceutical or material science applications.
Heterocyclic Building Block
As a pyridine derivative, 2,4-Dihydroxypyridine functions as a versatile building block in organic synthesis. It is employed in the creation of diverse heterocyclic compounds, contributing to advancements in medicinal chemistry and related fields.
Chemical Synthesis Research
This compound is a useful reagent for chemical synthesis laboratories. Its structure allows for various chemical transformations, facilitating the exploration of new synthetic routes and the preparation of novel organic molecules.
| Molecular weight | 111.10 |
|---|---|
| Empirical formula | C5H5NO2 |
| Assay | 97% |
| Application | 2,4-Dihydroxypyridine (3-deazauracil) was used in the synthesis of diazaphenoxathiin skeleton1. |
| Melting point | 272-276 °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) | 26-36 |
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 2,4-Dihydroxypyridine used for?
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2,4-Dihydroxypyridine is primarily used as a building block in chemical synthesis, particularly in the construction of heterocyclic systems like the diazaphenoxathiin skeleton.
What are the CAS number and molecular formula for 2,4-Dihydroxypyridine?
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The CAS number for 2,4-Dihydroxypyridine is 626-03-9, and its molecular formula is C5H5NO2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2,4-Dihydroxypyridine with an assay of 97%. We do not represent this product as USP, BP, or EP grade.
How should 2,4-Dihydroxypyridine be handled?
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2,4-Dihydroxypyridine is a warning hazard compound (GHS07) that causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Appropriate personal protective equipment, including a dust mask type N95 (US), eyeshields, and gloves, should be worn. In case of eye contact, rinse cautiously with water for several minutes and remove contact lenses if present and easy to do, continuing rinsing.
Is 2,4-Dihydroxypyridine a controlled substance?
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The provided data does not indicate that 2,4-Dihydroxypyridine is a controlled substance.
How is 2,4-Dihydroxypyridine shipped and exported?
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Tech Serve Solutions, as a specialist global supplier and exporter since 1998, handles the packing, shipping, and export of chemicals like 2,4-Dihydroxypyridine in compliance with international regulations.
How can I request a sample or quote for 2,4-Dihydroxypyridine?
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To request a sample or quote for 2,4-Dihydroxypyridine, please contact our sales team through the appropriate channels on our website.
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