1,4-Diphenethylpiperazine

Specifications

• CAS Number: 5783-00-6
• Purity: ≥ 97 % HPLC
• Grade: Industrial grade
• Molecular Formula: C20H26N2
• Molecular Weight: 294.4 g/mol
• Appearance: A white to off-white crystalline solid.
• Application: Chemical reagents, Treatment of methamphetamine use disorder, Positron Emission Tomography (PET) Ligands.

Documentation

• Certificate of Analysis (COA)
• Safety Data Sheet (SDS)

Production Manufacturer

Palkem India, based in Mumbai, India, is a prominent chemical company recognized for its reliable supply of high-quality chemicals across diverse industries. With a strong focus on customer satisfaction and continuous improvement, Palkem India has earned a reputation as a preferred supplier within the chemical sector. Offering an extensive product range, dependable delivery, and responsive customer service, Palkem India is well-positioned for ongoing growth and success.

Physicochemical properties

Physical Parameters

Parameter	Value / Description
Melting Point (MP)	69 - 70 °C
Boiling Point (BP)	-
Density	-
Specific Gravity	-
Solubility	Soluble in organic solvents
Refractive Index	-
Vapor Pressure	-
Viscosity	-
Phase at Room Temperature	Solid

Chemical Parameters

Parameter	Value / Description
Chemical Stability	Expected to be stable under standard conditions. As a secondary amine, it can absorb atmospheric CO₂ to form a carbonate salt over time.
Flash Point	-
Chemical Reactivity	Basicity: Acts as a diamino base. It can accept two protons to form a dication. Its pKa values are not precisely documented but are expected to be typical for aliphatic secondary amines (~9-11). It can form salts with acids (commonly dihydrochloride, dihydrobromide). Can undergo alkylation at the nitrogen atoms. Can act as a ligand in coordination chemistry. Functional Groups: Two secondary amine groups (piperazine ring) and two phenethyl substituents (benzyl-type aromatic rings).
Functional Groups	Piperazine ring (tertiary diamine) Aromatic phenyl rings Alkyl (ethyl) linkers
Spectroscopic Data (IR, NMR, etc.)	IR Spectroscopy: Expected characteristic bands for amine N-H stretch (~3300-3500 cm⁻¹, often broad), aromatic C-H stretch (~3030 cm⁻¹), aliphatic C-H stretches (~2850-3000 cm⁻¹), and aromatic C=C stretches (~1450-1600 cm⁻¹). NMR Spectroscopy (¹H and ¹³C): Reported in synthesis literature. Typical signals include: ¹H NMR: Aromatic multiplet (δ ~7.2-7.4 ppm), methylene protons adjacent to the aromatic ring (CH₂-Ph, δ ~2.6-2.8 ppm), methylene protons adjacent to the nitrogen (N-CH₂-CH₂-Ph, δ ~2.4-2.6 ppm), and piperazine ring protons (N-CH₂-CH₂-N, δ ~2.3-2.5 ppm). The amine N-H protons may be broad or not observed. ¹³C NMR: Aromatic carbons (δ ~128-140 ppm), ipso carbon (δ ~139 ppm), aliphatic methylene carbons (δ ~50-60 ppm for N-CH₂, δ ~33-35 ppm for Ph-CH₂). Mass Spectrometry (MS): Molecular ion peak (m/z 294) for C₂₀H₂₆N₂. Common fragments result from cleavage of the bonds beta to the nitrogen (characteristic of phenethylamines) and piperazine ring fragmentation. UV-Vis Spectroscopy: No significant absorption in the visible region. Absorbs in the UV due to the aromatic phenyl groups (λmax ~258 nm).

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