1-(4-Chlorophenyl)-3-methyl-1H-pyrazol-5-ylamine
1-(4-Chlorophenyl)-3-methyl-1H-pyrazol-5-ylamine (CAS 40401-39-6) is an aminopyrazole building block with the molecular formula C10H10ClN3 and a molar mass of 207.66 g/mol. It is a solid pyrazole derivative bearing a 4-chlorophenyl group on the ring nitrogen and a free 5-amino group, melting at about 108-112 degC. Tech Serve Solutions supplies it as a research-grade heterocyclic intermediate for chemical synthesis, where the reactive amine and halogenated aryl ring make it useful in building more complex molecules.
- IUPAC
- 2-(4-Chlorophenyl)-5-methyl-2H-pyrazol-3-ylamine
- Synonyms
- 1-(4-Chlorophenyl)-3-methyl-1H-pyrazol-5-ylamine2-(4-Chlorophenyl)-5-methyl-2H-pyrazol-3-ylamine5-Amino-1-(4-chlorophenyl)-3-methylpyrazole5-Amino-1-(4-chlorophenyl)-3-methyl-1H-pyrazole1-(4-Chlorophenyl)-3-methyl-5-aminopyrazoleCAS 40401-39-6
Heterocyclic building block
Serves as a versatile aminopyrazole scaffold in multistep organic synthesis. The free 5-amino group offers a convenient handle for acylation, condensation and ring-forming reactions.
Pharmaceutical and agrochemical intermediate
Aminopyrazoles of this type are widely used as intermediates in medicinal and crop-protection chemistry research. It is offered for laboratory and process-development use, not as a finished active ingredient.
Fused-ring and pyrazole chemistry
The adjacent amine and ring nitrogen allow annulation to fused bicyclic systems such as pyrazolo-pyrimidines and related heterocycles, supporting discovery and structure-activity studies.
Functionalisation via the chloroaryl group
The 4-chlorophenyl substituent provides a site for further derivatisation, including transition-metal-catalysed coupling, enabling rapid library and analogue generation.
Reference and research reagent
Supplied at 97% assay for use as a characterised reagent in method development, analytical work and exploratory synthesis.
| Molecular weight | 207.66 |
|---|---|
| Empirical formula | C10H10ClN3 |
| Assay | 97% |
| Melting point | 108-112 °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) | 26-36/39 |
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 1-(4-Chlorophenyl)-3-methyl-1H-pyrazol-5-ylamine used for?
+
It is used primarily as a heterocyclic building block and synthetic intermediate. The reactive 5-amino group and 4-chlorophenyl ring make it a useful aminopyrazole scaffold in pharmaceutical, agrochemical and general organic synthesis research. Tech Serve Solutions supplies it for laboratory and process-development use rather than as a finished product.
What is the CAS number and molecular formula of 1-(4-Chlorophenyl)-3-methyl-1H-pyrazol-5-ylamine?
+
The CAS number is 40401-39-6 and the EC number is 254-907-3. The molecular formula is C10H10ClN3 with a molecular weight of 207.66 g/mol. The MDL number is MFCD03478180, and it is also known as 2-(4-Chlorophenyl)-5-methyl-2H-pyrazol-3-ylamine.
What grade and purity does Tech Serve Solutions supply?
+
It is supplied as a research-grade heterocyclic building block at a typical assay of 97%, with a reported melting point of 108-112 degC. We do not represent this material as USP, BP or EP pharmacopoeial grade. A current Certificate of Analysis is provided with each batch; please confirm your required specification when enquiring.
What are the safety and handling requirements?
+
The material is classified GHS07 with the signal word Warning. It may cause skin irritation (H315), serious eye irritation (H319) and respiratory irritation (H335). Handle with gloves and eye protection, use an N95-type dust mask, and avoid dust formation. If it gets in eyes, rinse cautiously with water for several minutes and remove contact lenses if present (P261, P305+P351+P338). It carries German Water Hazard Class WGK 3 (severely hazardous to water), so prevent release to drains and watercourses. Always consult the Safety Data Sheet before use.
Is 1-(4-Chlorophenyl)-3-methyl-1H-pyrazol-5-ylamine a controlled or scheduled substance?
+
Based on the supplied data, this compound is not flagged as a controlled or scheduled substance. Customers remain responsible for confirming the applicable import, export and regulatory requirements in their own jurisdiction before ordering.
How is 1-(4-Chlorophenyl)-3-methyl-1H-pyrazol-5-ylamine packed, shipped and exported?
+
It is packed in tightly sealed, labelled containers appropriate to the order quantity, from research samples to bulk. Each shipment includes the Certificate of Analysis and Safety Data Sheet, with packaging and documentation prepared to meet relevant transport and customs requirements. As an experienced exporter, Tech Serve Solutions ships worldwide and can advise on suitable packing for your destination.
How do I request a sample or quote?
+
Contact Tech Serve Solutions with the product name or CAS number 40401-39-6, your required quantity and purity, and your delivery destination. We will respond with availability, lead time and a formal quotation, and can arrange a sample where appropriate.
▶ 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