2‑FEA / 3‑FEA Pellets 40mg / 120mg — Analytical Reference Standard
2‑FEA / 3‑FEA Pellets 40mg / 120mg are fluoro‑substituted amphetamines, positional isomers of fluoroethylamphetamine differing by fluorine atom placement at the ortho (2‑) or meta (3‑) position of the phenyl ring.
They serve as reference compounds for chromatographic and spectroscopic identification of novel psychoactive substances (NPS) in seized‑drug or toxicological analysis.
Pelletized forms (40 mg and 120 mg) are used to standardize detection thresholds and validate method sensitivity.
Organic / Inorganic Chemistry
| Property | Data |
|---|---|
| IUPAC Name (2‑FEA) | 1‑(2‑fluorophenyl)‑N‑ethyl‑2‑propan‑2‑amine |
| IUPAC Name (3‑FEA) | 1‑(3‑fluorophenyl)‑N‑ethyl‑2‑propan‑2‑amine |
| Molecular Formula | C₁₁H₁₆FN |
| Molecular Weight | 181.25 g mol⁻¹ |
| Chemical Class | Fluoroamphetamine derivatives, aryl‑ethylamines |
| Functional Groups | Primary amine · aromatic fluoride · secondary alkyl |
| Physical Form | Pelletized solid (white to off‑white) |
| Boiling Point | ≈ 250 °C (free base) |
| Melting Point (HCl salt) | ≈ 158 °C |
| Solubility | Freely soluble in ethanol and methanol, moderately in water |
| Inorganic Residue | < 0.001 % trace metals (ICP‑MS certified) |
Chemical Biology
- Pharmacological Class: Substituted amphetamine analogue (stimulant).
- Use in Research: Reference analyte for detecting fluoro‑amphetamines and validating metabolite libraries.
- Mode of Action (in vitro): Monoamine transporter substrate and releasing agent (5‑HT, DA, NE pathways).
- Metabolic Pathways: Oxidative deamination via MAO · hydroxylation and fluorine retention on phenyl ring · N‑dealkylation producing fluoroamphetamine metabolites.
- Toxicological Notes: High pharmacodynamic potency · used only in trace quantities for analytical calibration.
Computational Chemistry
| Descriptor | Value (DFT B3LYP / 6‑31G*) |
|---|---|
| Dipole Moment | 2.65 D (2‑FEA) · 2.58 D (3‑FEA) |
| HOMO–LUMO Gap | 5.82 eV |
| Predicted log P | 2.4 |
| Amino Group pKa | ≈ 9.9 |
| Topological Polar Surface Area | 32 Ų |
| Rotatable Bonds | 4 |
| Conformational Feature | Fluorine substitution alters phenyl torsion angle (~ 30° for 2‑FEA · 22° for 3‑FEA). |
| Binding Energy (SERT model)** | –8.7 kcal·mol⁻¹ (avg.) |
| Computational Use** | QSAR, drug‑transporter interaction and metabolic rate prediction validation. |
Environmental Chemistry
- Stability: Chemically stable at ambient conditions; sensitive to UV oxidation.
- Photolysis: Fluoro substitution reduces photo‑oxidative degradation rate (~ half‑life 7 h at 280 nm).
- Hydrolysis: Minimal degradation across pH 5–9.
- Persistence: Moderate due to C–F bond stability.
- Partition Coefficient (log Kow): 2.4 → moderate bioaccumulation risk.
- Decomposition: Controlled incineration (> 1100 °C) recommended to cleave C–F bond safely.
Laboratory Equipment
| Instrument | Analytical Purpose |
|---|---|
| GC–MS (EI) | Diagnostic ions m/z 44, 58, 150 (base peak depends on isomer). |
| LC–MS/MS (ESI⁺) | [M+H]⁺ = 182 m/z · Fragments 164, 135. |
| FTIR (ATR) | N–H stretch 3315 cm⁻¹ · C–F stretch ~ 1130 cm⁻¹ · Aromatic C–H ~ 3030 cm⁻¹. |
| ¹H NMR (CDCl₃) | δ 7.0–7.3 (aromatic) · δ 2.8 (Cα‑H), δ 1.1 (CH₃). |
| Chromatography | C18 reversed phase · Mobile phase: MeOH/H₂O 70:30 + 0.1 % formic acid. |
| Storage | ≤ –20 °C · sealed in light‑resistant container. |
Consumables / Reagents
- LC–MS‑grade acetonitrile and methanol.
- PTFE filtration membranes (0.22 µm).
- Analytical balance ± 0.01 mg.
- Certified amphetamines calibration mixes.
- PPE: nitrile gloves, lab coat, goggles, P3 respirator.
Regulation & Safety
| Aspect | Specification |
|---|---|
| Legal Status | Schedule I / Class A (analogue of amphetamines controlled under UN 1971 Convention). |
| Authorized Use | Analytical & forensic research in licensed facilities only. |
| GHS Signal Word | Danger |
| Hazard Codes | H301, H311, H331 – Toxic if swallowed/inhaled/through skin. |
| Precautions | Use biosafety cabinet or fume hood · avoid skin contact and aerosol formation. |
| First Aid | Flush exposure area ≥ 15 min; seek medical attention immediately . |
| Waste Disposal | Hazardous organic waste → licensed incineration. |
Chemical Informatics
| Descriptor | 2‑FEA | 3‑FEA |
|---|---|---|
| SMILES | CCNCC(C)C1=CC=CC=C1F |
CCNCC(C)C1=CC(F)=CC=C1 |
| InChIKey | MLPCFPQSSXLNHJ-UHFFFAOYSA-N |
BMXRPFKDDIXLCN-UHFFFAOYSA-N |
| Molecular Mass | 181.25 | 181.25 |
| Polar Surface Area (Ų) | 32 | 32 |
| log P | 2.4 | 2.4 |
| Rotatable Bonds | 4 | 4 |
| QSAR Applications | Transporter substrate models · lipophilicity prediction datasets. | |
| Integration | Forensic toxicology spectral databases · chemoinformatics registries. |
Compliance and Ethical Statement
⚠️ Controlled‑Substance Notice
Fluoroethylamphetamine (2‑FEA and 3‑FEA) is classified as a controlled stimulant analogue. Its manufacture, possession, transport, or analysis requires explicit government authorization.
The information presented here is for scientific documentation and regulatory reference only — not for marketing or promotion of use.




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