4-Hydroxypyridine
4-Hydroxypyridine (CAS: 626-64-2), with the molecular formula C5H5NO and a molecular weight of 95.10 g/mol, is a key organic compound. It serves as a valuable building block in chemical synthesis, particularly within heterocyclic chemistry. Its applications span various research and development sectors, contributing to the creation of novel materials and complex molecules. Tech Serve Solutions offers this pyridine derivative, ensuring quality for scientific endeavours.
- IUPAC
- 4-Pyridinol,4-Pyridone

Synthesis of Inorganic Compounds
4-Hydroxypyridine has been employed in the synthesis of inorganic compounds like (Ag3MoO3F3) (Ag3MoO4)Cl through hydro(solvato)thermal methodologies, demonstrating its utility in materials science research.
Environmental Contaminant Degradation Studies
It serves as a model compound for investigating the natural photodegradation processes of representative aquatic environmental contaminants, aiding in environmental science research and remediation studies.
Heterocyclic Building Block
As a pyridine derivative, 4-Hydroxypyridine is a versatile heterocyclic building block, widely used in organic synthesis for constructing more complex molecular architectures.
| Molecular weight | 95.10 |
|---|---|
| Empirical formula | C5H5NO |
| Assay | 95% |
| Boiling point | 230-235 °C/12 mmHg(lit.) |
| Application | 4-Hydroxypyridine was used in the synthesis of (Ag3MoO3F3) (Ag3MoO4)Cl by hydro(solvato)thermal methods1. It was used as model compound to study the natural photodegradation of representative aquatic environmental contaminants2. |
| Melting point | 150-151 °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 4-Hydroxypyridine used for?
+
4-Hydroxypyridine is used as a model compound in studies of environmental contaminant photodegradation and as a building block in chemical synthesis, particularly for heterocyclic compounds.
What are the CAS number and formula for 4-Hydroxypyridine?
+
The CAS number for 4-Hydroxypyridine is 626-64-2, and its molecular formula is C5H5NO.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies 4-Hydroxypyridine with an assay of 95%. We do not represent this product as USP, BP, EP, or any pharmacopoeia grade.
How should 4-Hydroxypyridine be handled?
+
4-Hydroxypyridine is a Warning compound (GHS07) that causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Use a dust mask type N95 (US), eyeshields, and gloves for safe handling. Ensure adequate ventilation.
Is 4-Hydroxypyridine shipped internationally?
+
Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 4-Hydroxypyridine.
How can I request a sample or quote for 4-Hydroxypyridine?
+
To request a sample or quote for 4-Hydroxypyridine, please contact our sales team through the TSS website or by phone.
▶ Related products

1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis

1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis