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    MFPVP molecular structure

    MFPVP Stats & Data

    4f-3m-α-pvp 4f-3me-α-pvp 3-m-4-f-α-pvp 3-methyl-4f-pvp 4-fluoro-3-methyl-α-pyrrolidinopentiophenone
    NPS DataHub
    MW299.82
    FormulaC16H23ClFNO
    IUPAC1-(4-Fluoro-3-methylphenyl)-2-(pyrrolidin-1-yl)pentan-1-one HCl
    SMILES[Cl-].CCCC(N1CCCC1)C(=O)c1ccc(F)c(C)c1.[H+]
    InChIKeyPZKMFYMXQSVGAL-UHFFFAOYSA-N
    Phenethylamines; 2020/1. Von 2-Phenethylamin abgeleitete Verbindungen; 2021/1. Von 2-Phenethylamin abgeleitete Verbindungen; 2022/1. Von 2-Phenethylamin abgeleitete Verbindungen
    Chemical Class Amphetamine
    Psychoactive Class Stimulant
    Half-Life Estimated 4–6 h (no human PK published; inferred from α‑PVP/MDPV analog data and toxicological timelines)

    Effect Profile

    Curated
    Stimulant 6.1

    Strong euphoria and anxiety/jitters with moderate focus, mild stimulation

    Stimulation / Energy×3
    5
    Euphoria / Mood Lift×2
    10
    Focus / Productivity×2
    7
    Anxiety / Jitters×1
    10

    Tolerance & Pharmacokinetics

    drugs.wiki
    Half-Life
    Estimated 4–6 h (no human PK published; inferred from α‑PVP/MDPV analog data and toxicological timelines)
    Addiction Potential
    High: pyrrolidinophenone cathinones are short-acting with steep comedowns and strong craving/redose drive; binge patterns and pronounced crashes are common and have been documented with α-PVP and related pyros.

    Tolerance Decay

    Full tolerance 1d Half tolerance 7d Baseline ~14d

    Tolerance data for MFPVP are limited; parameters extrapolated from α‑PVP/MDPV patterns and community reports; use as a conservative planning guide only.

    Cross-Tolerances

    α-PVP
    80% ●●○
    α-PHP
    70% ●○○
    MDPV
    80% ●○○
    other pyrrolidinophenone cathinones
    60% ●○○

    Harm Reduction

    drugs.wiki

    Evidence-based harm reduction points: (1) A fatality solely attributed to 4‑fluoro‑3‑methyl‑α‑PVP was reported with femoral blood 26 ng/mL; this illustrates that severe cardiotoxicity and lethal outcomes may occur at low nanogram-per-millilitre blood concentrations, so conservative dosing and strict avoidance of rapid redosing are essential. (2) Clinical presentations of pyrovalerone-type intoxication commonly include agitation, delirium, tachycardia, hypertension, hyperthermia and, in severe cases, seizures; seek urgent care for chest pain, very high temperature, or severe confusion. (3) Freebasing/smoking produces a very rapid onset and powerful craving but has been anecdotally linked to acute lung injury with pyrovalerones; if chosen despite risks, avoid overheating, plastics, and improvised devices; consider safer ROAs. (4) Combining stimulants with depressants (e.g., alcohol, GHB/GBL, opioids, large benzodiazepine doses) is hazardous because the stimulant can mask sedation, then wear off abruptly, precipitating respiratory depression; if sedation is needed for severe stimulant toxicity, use medically supervised benzodiazepines rather than self-medicating. (5) Tramadol significantly lowers seizure threshold; combining with stimulants adds risk of seizures—avoid this mix. (6) Injection markedly escalates harm with pyros (rapid compulsive use, vascular injury, infectious-disease outbreaks have been associated with α‑PVP injection); avoid injecting; if someone injects anyway, use sterile technique, wheel filters, and new equipment every time. (7) Adulteration/mis-selling is common in the cathinone market (e.g., α‑PVP sold as ‘3‑MMC’); use multi-reagent tests as a first pass and, where possible, confirm with FT‑IR/GC‑MS drug checking; do not rely on appearance, and be aware that FT‑IR can miss low‑level adulterants (<~5%). (8) Set a pre‑committed total dose and time limit for a session and avoid continuous top-ups; ensure hydration with electrolytes, food intake, cooling breaks, and sleep recovery. (9) Intranasal use can damage nasal mucosa over time; alternate nostrils, use fine powders and gentle technique, and allow days for recovery; consider oral dosing if nasal irritation occurs. (10) Expect rapid tolerance after a single heavy session; plan at least 1–2 weeks off to allow tolerance and sleep patterns to normalize.

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