4-Aminopyridazine
4-Aminopyridazine (CAS: 20744-39-2; Formula: C4H5N3) is a heterocyclic organic compound with a molecular weight of 95.10 g/mol. It serves as a valuable building block in chemical synthesis, particularly within the realm of heterocyclic chemistry. This pyridazine derivative is suitable for various research and development applications, contributing to the creation of novel chemical entities and advanced materials.
- IUPAC
- 4-Pyridazinamine

Organic Synthesis Intermediate
Utilised as a key intermediate in the synthesis of more complex organic molecules. Its pyridazine core allows for diverse functionalization pathways in the development of novel compounds.
Heterocyclic Chemistry Research
A fundamental building block for exploring new heterocyclic structures. Researchers leverage its unique chemical properties for the design and synthesis of compounds with potential biological or material science applications.
Pharmaceutical Intermediate Development
Engaged in the early stages of drug discovery and development. Its structure is amenable to modifications for creating potential active pharmaceutical ingredients (APIs) or related research compounds.
| Molecular weight | 95.10 |
|---|---|
| Empirical formula | C4H5N3 |
| Assay | 97% |
| Storage temperature | −20°C |
| Melting point | 127-133 °C |

Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Water hazard class (WGK, DE) | 3 |
|---|---|
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-36/37/38 |
| Safety statements (S) | 26 |
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-Aminopyridazine used for?
+
4-Aminopyridazine is primarily used as a building block in organic synthesis and heterocyclic chemistry research, including the development of pharmaceutical intermediates.
What are the CAS number and molecular formula of 4-Aminopyridazine?
+
The CAS number for 4-Aminopyridazine is 20744-39-2, and its molecular formula is C4H5N3.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies 4-Aminopyridazine with an assay of 97%. We do not represent this product as USP, BP, EP, or other pharmacopoeia grades.
How should 4-Aminopyridazine be handled and stored?
+
4-Aminopyridazine is classified with GHS07 and carries a Warning signal word. Hazard statements include H302 (Harmful if swallowed), H315 (Causes skin irritation), H319 (Causes serious eye irritation), and H335 (May cause respiratory irritation). It should be stored at -20°C. Handle with appropriate personal protective equipment, avoiding dust formation and ensuring good ventilation. Refer to the Safety Data Sheet for comprehensive handling information.
Is 4-Aminopyridazine a controlled substance?
+
Based on the provided data, there is no indication that 4-Aminopyridazine (CAS: 20744-39-2) is a controlled substance.
How is 4-Aminopyridazine packed, shipped, and exported?
+
4-Aminopyridazine is carefully packed to maintain its integrity during transit. As a global supplier, Tech Serve Solutions expertly handles the export of chemicals, adhering to all relevant international shipping regulations.
How can I request a sample or quote for 4-Aminopyridazine?
+
To request a sample or a quotation for 4-Aminopyridazine, please contact our sales team through the provided channels on the Tech Serve Solutions website.
▶ 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