3-Amino-5-hydroxypyrazole
3-Amino-5-hydroxypyrazole (CAS: 6126-22-3), with the molecular formula C3H5N3O and a molecular weight of 99.09 g/mol, is a heterocyclic organic compound. It serves as a valuable building block in chemical synthesis, particularly within the realm of pyrazole derivatives. This compound finds application in the development of novel molecules for various research and industrial purposes.

Chemical Synthesis Intermediate
Used as a key intermediate in the synthesis of more complex organic molecules, particularly those containing the pyrazole moiety. Its structure allows for diverse chemical modifications and derivatizations.
Heterocyclic Chemistry Research
Valuable in academic and industrial research settings for exploring new synthetic routes and developing novel heterocyclic compounds. It contributes to the expansion of the pyrazole chemical space.
Pharmaceutical Intermediate Development
Potential applications in the early-stage development of pharmaceutical candidates, where pyrazole structures are known to exhibit diverse biological activities.
| Molecular weight | 99.09 |
|---|---|
| Empirical formula | C3H5N3O |
| Assay | 98% |
| Melting point | 214 °C (dec.)(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 3-Amino-5-hydroxypyrazole used for?
+
3-Amino-5-hydroxypyrazole is primarily used as a building block in chemical synthesis, especially for developing heterocyclic compounds and pyrazole derivatives for research and industrial applications.
What is the CAS number and formula for 3-Amino-5-hydroxypyrazole?
+
The CAS number is 6126-22-3 and the empirical formula is C3H5N3O.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies 3-Amino-5-hydroxypyrazole with an assay of 98%. We do not represent this product as USP, BP, or EP grade.
How should 3-Amino-5-hydroxypyrazole be handled?
+
Handle with appropriate personal protective equipment including a dust mask (type N95 US recommended), eyeshields, and gloves. Avoid breathing dust and ensure good ventilation. It is classified as causing skin irritation, serious eye irritation, and respiratory irritation (H315, H319, H335).
Is 3-Amino-5-hydroxypyrazole controlled or scheduled?
+
The provided data does not indicate that 3-Amino-5-hydroxypyrazole is a controlled or scheduled substance.
How is 3-Amino-5-hydroxypyrazole shipped and exported?
+
Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, facilitating international shipments of 3-Amino-5-hydroxypyrazole.
How can I request a quote or sample?
+
To request a quote or sample of 3-Amino-5-hydroxypyrazole, please contact our sales team through the 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