1-(4-Chlorophenyl)-3-phenylpyrazole-4-propionic acid
1-(4-Chlorophenyl)-3-phenylpyrazole-4-propionic acid (CAS 870704-02-2) is a substituted pyrazole carboxylic-acid building block with the molecular formula C18H15ClN2O2 and a molar mass of 326.78 g/mol. Supplied as a solid (melting point 136-140 °C) at 97% assay, it pairs a chlorophenyl- and phenyl-substituted pyrazole core with a pendant propionic-acid side chain. Tech Serve Solutions supplies it as a research-grade heterocyclic intermediate for medicinal-chemistry and synthetic applications.
- Synonyms
- 1-(4-Chlorophenyl)-3-phenylpyrazole-4-propionic acid1-(4-Chlorophenyl)-3-phenyl-1H-pyrazole-4-propanoic acid3-[1-(4-chlorophenyl)-3-phenyl-1H-pyrazol-4-yl]propanoic acidCAS 870704-02-2MFCD07784413

Heterocyclic building block
Serves as a functionalised pyrazole scaffold in chemical synthesis, combining a halogenated aromatic system with a reactive carboxylic-acid handle for onward derivatisation.
Medicinal-chemistry intermediate
The substituted pyrazole core is a recognised motif in pharmaceutical research, making this compound a useful intermediate for discovery and structure-activity studies.
Carboxylic-acid coupling partner
The propionic-acid group enables amide and ester formation, allowing the molecule to be elaborated into more complex targets through standard coupling chemistry.
Laboratory research reagent
Used in research and development settings where a defined halogenated heterocyclic acid of consistent 97% assay is required for synthetic route development.
| Molecular weight | 326.78 |
|---|---|
| Empirical formula | C18H15ClN2O2 |
| Assay | 97% |
| Melting point | 136-140 °C |

Hazard statements
- H319Causes serious eye irritation
- H413May cause long-lasting harmful effects to aquatic life
Precautionary statements
- 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 |
| 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 1-(4-Chlorophenyl)-3-phenylpyrazole-4-propionic acid used for?
+
It is used principally as a heterocyclic building block and intermediate in chemical synthesis and medicinal-chemistry research. Its pyrazole core and carboxylic-acid side chain make it suitable for derivatisation into more complex molecules. Tech Serve Solutions supplies it for research and development use.
What is the CAS number and molecular formula of 1-(4-Chlorophenyl)-3-phenylpyrazole-4-propionic acid?
+
The CAS number is 870704-02-2 and the molecular formula is C18H15ClN2O2. Its molecular weight is 326.78 g/mol and the MDL number is MFCD07784413. It is a solid with a melting point of 136-140 °C.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies this compound at 97% assay as a research-grade heterocyclic building block. It is offered for research and synthetic use; we do not represent it as USP, BP or EP pharmacopoeia grade. A certificate of analysis can be provided on request.
What are the safety and handling considerations?
+
The material is classified under GHS07 with the signal word Warning and the hazard statements H319 (causes serious eye irritation) and H413 (may cause long-lasting harmful effects to aquatic life). Follow precautionary advice P305+P351+P338, wear eye protection and gloves, use a suitable dust mask, and avoid release to the environment. It is assigned WGK 3 (Germany). Always consult the Safety Data Sheet before use.
How is 1-(4-Chlorophenyl)-3-phenylpyrazole-4-propionic acid packed, shipped and exported?
+
The product is packed in secure, clearly labelled containers sized to the order, from gram quantities to larger research lots. Each shipment is accompanied by the relevant documentation and Safety Data Sheet, and exported worldwide in line with applicable transport and customs requirements.
How do I request a sample or quote?
+
Contact Tech Serve Solutions with your required quantity, purity and destination, and our team will respond with availability, lead time and a formal quotation. Samples can be arranged subject to availability for qualified research customers.
▶ 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