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    2-AI molecular structure

    2-AI Stats & Data

    Su 8629 2-indanamine 2-aminoindan Pink champagnes 2ai 2-aminoindane
    NPS DataHub
    MW133.19
    FormulaC9H11N
    CAS2975-41-9
    IUPAC2-Indanamine
    SMILESNC1Cc2ccccc2C1
    InChIKeyLMHHFZAXSANGGM-UHFFFAOYSA-N
    Phenethylamines Aminoindanes
    Chemical Class Aminoindane
    Psychoactive Class Stimulant

    Toxicity

    PsychonautWiki

    The toxicity and long-term health effects of recreational 2-AI use do not seem to have been studied in any scientific context and the exact toxic dosage is unknown. This is because 2-AI has very little history of human usage. Anecdotal evidence from people who have tried 2-AI within the community suggest that there do not seem to be any negative health effects attributed to simply trying this drug at low to moderate doses by itself and using it sparingly (but nothing can be completely guaranteed). It is strongly recommended that one use harm reduction practices when using this drug.

    Effect Profile

    Curated + 10 Reports
    Stimulant 6.6

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

    Stimulation / Energy×3
    5
    Euphoria / Mood Lift×2
    9
    Focus / Productivity×2
    10
    Anxiety / Jitters×1
    10

    Tolerance & Pharmacokinetics

    drugs.wiki
    Half-Life
    ~3–4 h (plasma) — inferred from human PK of the related analgesic indantadol (CHF‑3381) where circulating 2‑AI was detected; uncertainty high.
    Addiction Potential
    Low‑to‑moderate: rapid NE/DA release yields short‑lived reinforcement; brief duration promotes redosing. Compared with amphetamine, subjective ‘compulsion’ appears milder for many, but binges and day‑to‑day use have led to insomnia, appetite suppression, anxiety and in rare cases paranoid ideation per reports.

    Tolerance Decay

    Full tolerance 6h Half tolerance 7d Baseline ~14d

    Pattern inferred from transporter‑releasing stimulants and community reports: fast within‑session tachyphylaxis with decay to near‑baseline in ~7–10 days. Exact magnitudes are uncertain.

    Cross-Tolerances

    amphetamine
    cathinones (general)
    modafinil (functional tolerance)

    Experience Report Analysis

    Erowid
    12 Reports
    10 Single-substance
    2003–2012 Date Range
    1 With Age Data
    5 Effects Detected

    Demographics

    Gender Distribution

    Too few reports for a chart: gender is known from 12 reports, and a split is drawn only from 20 reports or more. Counts are shown instead. Why 20?

    • Male 11 of 12
    • Not Specified 1 of 12

    Age Distribution

    Reports Over Time

    Effect Analysis

    Erowid

    Effects aggregated from 10 experience reports (10 single-substance Erowid)

    10 Reports
    5 Effects Detected
    2 Positive
    2 Adverse
    1 Neutral

    Effect Sentiment Distribution

    Confidence Distribution

    Each bar is the share of reports mentioning the effect; its whisker, and the band on the rows below, is the 95% interval: where the share could plausibly be with other reports of the same kind.

    Too few reports for bars: these effects come from 10 single-substance Erowid reports, and a bar is drawn only from 20 reports or more. With fewer, a percentage cannot tell a common effect from a rare one. Counts are shown instead. Why 20?

    Positive Effects 2

    Stimulation 6 of 10 70%
    Euphoria 5 of 10 70%

    Adverse Effects 2

    Anxiety 5 of 10 70%
    Increased Heart Rate 4 of 10 70%
    Show 1 neutral or unclassified mention
    Sedation 3 of 10

    Form / Preparation

    Most common forms and preparations, as a share of the 9 reports that give one

    Too few reports for bars: these forms come from 9 reports, and a bar is drawn only from 20 reports or more. With fewer, a percentage cannot tell a common effect from a rare one. Counts are shown instead. Why 20?

    • Powder / Crystals 7 of 9

    Harm Reduction

    drugs.wiki

    — Pharmacology: In vitro profiling shows 2‑aminoindane acts as a monoamine transporter substrate with higher potency at NET and DAT than at SERT, and it binds α2‑adrenergic receptors at low‑to‑mid‑nanomolar Ki, consistent with reports of peripheral vasoconstriction, piloerection and mild analgesia. This profile distinguishes it from serotonergic aminoindanes such as MDAI. — Dose uncertainty: Formal human dose‑finding data are lacking; community reports vary widely, from inactive at 10–20 mg oral to clear stimulation at 50–100+ mg, with rectal administration increasing intensity. Start low, especially with new batches. — Duration and redosing: The active phase is short, but residual stimulation can prolong into insomnia; repeated redoses compress sleep and may precipitate anxiety or paranoid thoughts. Build a clear ‘no‑redose after X hours’ rule before starting. — Cardiovascular risk: Expect elevations in BP/HR; those with hypertension, arrhythmia, or other cardiovascular disease should avoid. Seek urgent care for chest pain, severe headache, confusion, or temperature >38.5 °C. — ROA risks: Intranasal use is notably painful and damaging to mucosa; use isotonic saline rinses if mistakenly insufflated. Rectal use should employ sterile water, body‑temperature isotonic solution and clean syringes (no needles), and precise volumetric dosing; avoid if there is rectal bleeding or inflammation. — Comedown/sleep: Prefer non‑pharmacologic sleep hygiene first (dark room, magnesium glycinate, hydration). If a sedative is used, avoid alcohol co‑use and do not stack multiple depressants. — Drug checking: Aminoindanes/NPS are frequently mis‑sold; confirm identity with multi‑reagent testing and, ideally, lab analysis (GC/MS/FTIR). Reagent color reactions for 2‑AI are inconsistent across batches; treat color tests as presumptive only. — Tolerance: Acute tolerance rises quickly during a session and decays over about a week; spacing sessions ≥7 days is prudent.

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