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    🧪 This is a research chemical with limited data on its long-term health effects, toxicity profile, and safe dosage ranges.

    CRL-40-941 Encyclopedic
    Encyclopedic
    Typical encyclopedia coverage. Cross-reference for important decisions.
    • 2 corroborating sources
    • 1 ROA with full dose ladder
    • duration data present
    • 19 combo interactions documented
    • classified Tentative
    • classified Research-chemical

    Aliases: Fladrafinil, Fluoromodafinil

    Stimulant Nootropic Research-chemical

    Summary TripSit

    A substance closely related to Adrafinil and Modafinil. It is the bis(p-fluoro) ring derivative of Adrafinil.

    Dose Information TripSit

    ROA Light Common Strong Heavy
    Oral 50-100mg 100-250mg 250-350mg 350mg+
    Light Common Strong Heavy

    Onset, Duration & After-effects TripSit

    ROA Onset Peak After Effects Total
    Oral 30-90 min 6-14 hrs 1-10 hrs 6-14 hrs

    Effect Profile

    Scores (1–10) curated from multiple sources:

    • Effect keyword matching from PsychonautWiki catalog
    • Weighted by importance: core (×3), major (×2), minor (×1)

    Full methodology

    Stimulant 6.0
    Strong 6/10

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

    Stimulation / Energy ×3
    6
    stimulation wakefulness alertness enhancement
    Euphoria / Mood Lift ×2
    7
    physical euphoria cognitive euphoria motivation enhancement
    Focus / Productivity ×2
    7
    focus enhancement memory enhancement motivation enhancement
    ⚠ Anxiety / Jitters ×1
    8
    anxiety increased heart rate vasoconstriction
    View methodology →

    Add to PsychonautWiki Journal

    The PsychonautWiki Journal logging app doesn't include every substance. To track CRL-40-941 there, start adding an ingestion, search for the name, and choose to add it as a custom substance. Paste these values:

    ⬇ Download import file Import this file as custom substances and you get "CRL-40-941 (Substance Search)" with every route's full dose ladder and timeline, no typing. Works on iOS and Android (v15+); the format is confirmed by the app's developer. The manual values below work for older versions.
    Name
    CRL-40-941
    Unit
    mg
    Description 
    CRL-40-941
Source: SubstanceSearch (substancesearch.com)

Oral dose (mg): light 50-100 · common 100-250 · strong 250-350 · heavy 350+

Oral duration: onset 0.5-1.5h · peak 6-14h · total 6-14h · after-effects 1-10h

Note: ranges are harm-reduction guidance, not a prescription. Start low, go slow, and test your substances.

    Tip: for quicker logging you can also add a Custom Unit in the app, e.g. common dose ~ 175 mg (Oral).

    The app keeps custom substances simple, so the full dose ranges live in the description text above. Ranges are harm-reduction guidance, not a prescription.

    Tolerance

    Build-up develops rapidly after a single use
    Reset 7–14 days for baseline

    Tolerance Decay

    Full tolerance 1h Half tolerance 10d Baseline ~14d

    Effects

    Positive
    • Stimulation
    • Physical euphoria
    Negative
    • Increased heart rate
    • Nausea
    • Headache
    • Headaches
    • Insomnia
    • Vasoconstriction
    • Motor impairment
    Neutral
    • Sedation
    Positive
    • Alertness enhancement
    • Wakefulness
    • Motivation enhancement
    • Focus enhancement
    • Memory enhancement
    • Cognitive euphoria
    • Anxiety suppression
    Negative
    • Anxiety
    Neutral
    • Talkativeness
    Positive
    • Increased libido
    • Increased music appreciation
    • Color enhancement
    Negative
    • Light sensitivity
    • Appetite suppression
    • Dehydration
    Neutral
    • Dulled perception
    • Spontaneous physical sensations

    Combinations TripSit

    Cross-Check CRL-40-941 with another substance

    CRL-40-941's nerd page Pharmacology, chemical data, effect profiles, and more
    →

    Helpful Links

    📘 Experience Reports 📖 TripSit 📖 PsychonautWiki