4-(4-Chlorophenyl)-1,2,3,6-tetrahydropyridine monohydrochloride
4-(4-Chlorophenyl)-1,2,3,6-tetrahydropyridine monohydrochloride (CAS 51304-61-1) is a heterocyclic organic compound with the molecular formula C11H12ClN · HCl and a molecular weight of 230.13. It serves as a valuable building block in chemical synthesis, particularly within the fields of pharmaceutical research and development. Its structure, featuring a halogenated pyridine core, makes it a useful intermediate for constructing more complex molecular architectures.
- Synonyms
- 4-(4-Chlorophenyl)-1,2,3,6-tetrahydropyridine monohydrochloride6-tetrahydropyridine monohydrochlorideC11H12ClN · HCl

Pharmaceutical Intermediate
This compound is frequently employed as an intermediate in the synthesis of active pharmaceutical ingredients (APIs). Its functional groups allow for various chemical transformations, facilitating the development of novel drug candidates.
Chemical Synthesis Building Block
As a versatile building block, 4-(4-Chlorophenyl)-1,2,3,6-tetrahydropyridine monohydrochloride is utilised in organic chemistry for the construction of diverse molecular structures. Its presence of a chlorine atom and a tetrahydropyridine ring offers specific reactivity for synthetic pathways.
Research and Development
In R&D settings, this chemical is used to explore new synthetic routes and to develop novel compounds with potential biological activity. It is a key component in the exploration of heterocyclic chemistry.
| Molecular weight | 230.13 |
|---|---|
| Empirical formula | C11H12ClN · HCl |
| Assay | 98% |
| Melting point | 199-204 °C(lit.) |


Hazard statements
- H301Toxic if swallowed
- H311Toxic in contact with skin
- H331Toxic if inhaled
- H351Suspected of causing cancer
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P301IF SWALLOWED
- P311Call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 2811 6.1 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T |
| Risk statements (R) | 23/24/25-40 |
| Safety statements (S) | 26-27-36/37/39-45 |
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-(4-Chlorophenyl)-1,2,3,6-tetrahydropyridine monohydrochloride used for?
+
This compound is primarily used as a building block in chemical synthesis and as an intermediate in pharmaceutical research and development for creating more complex molecules.
What is the CAS number and chemical formula for this product?
+
The CAS number is 51304-61-1 and the empirical formula is C11H12ClN · HCl.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies this product at a purity of 98%. This is a technical/research grade material, and TSS does not represent it as USP, BP, or EP.
How should 4-(4-Chlorophenyl)-1,2,3,6-tetrahydropyridine monohydrochloride be handled safely?
+
This compound is labelled Danger. It is toxic if swallowed, in contact with skin, or if inhaled (H301-H311-H331), and suspected of causing cancer (H351). Appropriate personal protective equipment, including eyeshields, face shields, gloves, and P2 respirator cartridges, must be used. Handle in a well-ventilated area and avoid exposure.
How is this chemical shipped and exported?
+
This chemical is classified under UN 2811, Hazard Class 6.1, Packing Group II. Tech Serve Solutions is experienced in exporting hazardous materials, adhering to all international shipping regulations.
How can I request a sample or obtain a quote?
+
To request a sample or a quote, please contact our sales team through the website or by phone. Please reference the product name and CAS number.
▶ 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