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    2C-T-2 molecular structure

    2C-T-2 Stats & Data

    Rosy 2ct2
    NPS DataHub
    MW241.35
    FormulaC12H19NO2S
    CAS207740-24-7
    IUPAC2-(4-ethylsulfanyl-2,5-dimethoxyphenyl)ethanamine
    SMILESNCCc1cc(OC)c(SCC)cc1OC
    InChIKeyHCWQGDLBIKOJPM-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 Phenethylamine
    Psychoactive Class Psychedelic
    Half-Life Estimated 4–6 h (user plasma LC‑MS data; no formal PK study)

    Receptor Profile

    Receptor Actions

    Agonists
    5-HT2A receptor agonist (partial)
    5-HT2B receptor agonist (partial)
    5-HT2C receptor agonist (partial)
    Adrenergic receptor agonist (partial)
    Inhibitors
    Possible MAO-A inhibitor (weak)
    Possible MAO-B inhibitor (weak)

    History & Culture

    1981–present

    2C-T-2 was first synthesized by Alexander Shulgin in 1981. That same year, Shulgin discovered its psychedelic properties through self-experimentation, establishing the compound's activity in humans.

    1990–1991

    The compound was first described in the scientific literature by psychedelic psychotherapy pioneer Myron J. Stolaroff in 1990. Stolaroff conducted a formal study evaluating 2C-T-2's potential use in psychotherapy based on the experiences of forty participants. He compared the effects favorably to MDMA, describing 2C-T-2 as more emotionally opening and permitting a wider exploration of feelings and thoughts. Subsequently, Shulgin and colleagues published a more detailed description in 1991, and the compound was featured prominently in Shulgin's book PiHKAL (Phenethylamines I Have Known and Loved) that same year.

    2C-T-2 holds a notable place in psychedelic chemistry as one of the so-called "magical half-dozen," Shulgin's self-rated most important phenethylamine compounds. All compounds in this group except mescaline were developed and synthesized by Shulgin himself. The magical half-dozen comprises mescaline, DOM, 2C-B, 2C-E, 2C-T-2, and 2C-T-7.

    1990s–present

    Following the publication of PiHKAL, 2C-T-2 emerged as a novel designer drug during the 1990s. A point of potential misidentification exists regarding the compound's naming. 2C-T-2 has occasionally been abbreviated simply as "T-2," a nickname also used for T-2 Toxin, a mycotoxin of the Tricothecene group formed mainly by Fusarium species. T-2 Toxin gained notoriety as an alleged chemical warfare agent in Southeast Asia, though it was later identified as bee feces rather than a Soviet military weapon. Despite the shared nickname, T-2 Toxin and 2C-T-2 are radically different compounds.

    Subjective Effect Notes

    cognitive: The head space of 2C-T-2 is described by many as one which is both insightful and relatively normal in its thought processes even at moderate to high dosages.

    Effect Profile

    Curated + 188 Reports
    Psychedelic 8.8

    Strong visuals, headspace, auditory effects, and body load

    Visual Intensity×3
    10103.5
    Headspace Depth×3
    107.52.4
    Auditory Effects×1
    10102.0
    Body Load / Somatic Effects×1
    10108.4
    Catalog Erowid BlueLight
    Empathogen 8.1

    Strong stimulation, sensory enhancement, and euphoria with moderate empathy

    Empathy / Social Openness×3
    76.81.9
    Euphoria / Mood Elevation×2
    86.13.2
    Stimulation×1
    106.32.9
    Sensory Enhancement×1
    10103.7
    Catalog Erowid BlueLight

    Duration Timeline

    Bluelight
    Onset Comeup Peak Offset After Effects
    Oral
    30 minutes - 1.0 hours
    30 minutes - 1.5 hours
    2.5-5 hours
    2-4 hours
    2-6 hours
    Total: 5-10 hours
    Insufflated
    4-15 minutes
    15-30 minutes
    2-4 hours
    1-2 hours
    2-4 hours
    Total: 3-7 hours
    Rectal
    15-30 minutes
    30 minutes - 1.0 hours
    2-4 hours
    2-3 hours
    2-4 hours
    Total: 5-8 hours

    Tolerance & Pharmacokinetics

    drugs.wiki
    Half-Life
    Estimated 4–6 h (user plasma LC‑MS data; no formal PK study)
    Addiction Potential
    Low: classical 5-HT2A psychedelic with negligible dopaminergic reinforcement; rapid tachyphylaxis discourages compulsive redosing.

    Tolerance Decay

    Full tolerance 8h Half tolerance 3d Baseline ~7d

    Rapid acute tachyphylaxis within the same session; cross-tolerance expected across serotonergic psychedelics. Data are mostly anecdotal across 2C‑x; spacing 7–14 days is commonly advised to reset.

    Cross-Tolerances

    classical psychedelics (LSD, psilocybin)
    60% ●○○
    other 2C phenethylamines
    50% ●○○

    Experience Report Analysis

    Erowid BlueLight
    148 Reports
    1998–2017 Date Range
    20 With Age Data
    32 Effects Detected

    Demographics

    Gender Distribution

    Age Distribution

    Reports Over Time

    Effect Analysis

    Erowid + Bluelight

    Effects aggregated from 188 experience reports (148 Erowid + 40 Bluelight)

    188 Reports
    143 Effects Detected
    69 Positive
    48 Adverse
    26 Neutral

    Effect Sentiment Distribution

    Confidence Distribution

    Positive Effects 69

    Color Enhancement 52.1% 89%
    Music Enhancement 44.1% 86%
    Stimulation 38.3% 81%
    Euphoria 31.4% 85%
    Empathy 29.8% 86%
    Focus Enhancement 28.8% 77%
    Tactile Enhancement 28.2% 83%
    Introspection 23.9% 81%
    Surface Breathing 22.5% 86%
    Body High 22.3% 87%
    Melting/flowing 20.0% 84%
    Contentment 17.5% 81%
    Visual Trails 17.5% 81%
    Entity Imagery 17.5% 83%
    Geometric Imagery 15.0% 84%
    Emotional Openness 15.0% 80%
    Sociability Enhancement 15.0% 80%
    Patterning 15.0% 86%
    Fractal Imagery 12.5% 86%
    Depth Distortion 12.5% 86%

    Adverse Effects 48

    Nausea 50.0% 85%
    Body Load 47.5% 84%
    Anxiety 38.8% 87%
    Vomiting 35.0% 91%
    Confusion 24.0% 82%
    Muscle Tension 21.8% 88%
    Fear 17.5% 86%
    Headache 16.5% 84%
    Panic 15.0% 87%
    Sadness 12.5% 77%
    Memory Suppression 11.7% 80%
    Jaw Clenching 10.1% 85%
    Insomnia 10.0% 76%
    Increased Heart Rate 8.1% 70%
    Motor Impairment 7.5% 85%
    Emotional Blunting 7.5% 70%
    Dysphoria 7.5% 80%
    Temporal Disorientation 7.5% 80%
    Body Distortion 7.5% 83%
    Focus Suppression 7.5% 78%

    Dose-Response Correlation

    How effect frequency changes across dose levels

    View data table
    Effect Light (n=17) Common (n=20) Strong (n=37) Heavy (n=15)
    Visual Distortions 82.4% 80.0% 91.9% 80.0%
    Color Enhancement 58.8% 55.0% 67.6% 33.3%
    Nausea 47.1% 30.0% 64.9% 33.3%
    Anxiety 41.2% 60.0% 45.9% 40.0%
    Music Enhancement 52.9% 45.0% 56.8% 40.0%
    Tactile Enhancement 35.3% 20.0% 48.6% 53.3%
    Stimulation 52.9% 45.0% 48.6% 26.7%
    Empathy 47.1% 30.0% 35.1% 40.0%
    Auditory Effects 17.6% 25.0% 45.9% 26.7%
    Focus Enhancement 23.5% 45.0% 40.5% 33.3%
    Euphoria 35.3% 25.0% 43.2% 33.3%
    Muscle Tension 0% 25.0% 37.8% 33.3%
    Confusion 35.3% 35.0% 29.7% 33.3%
    Sedation 23.5% 35.0% 29.7% 26.7%
    Headache 23.5% 15.0% 27.0% 13.3%

    Subjective Effect Ontology

    Experience Reports

    Structured effect tags extracted from 188 Erowid & Bluelight experience reports using a controlled vocabulary of 220+ canonical effects across 15 domains.

    Visual

    visual distortions 126 67.0%

    1 unique effects extracted · Derived from Erowid & Bluelight reports

    Dose–Effect Mapping

    Experience Reports

    How reported effects shift across dose tiers, based on 148 experience reports.

    Oral dose range: 10.0–25.0 mg (median 20.0 mg)
    Effect Light (n=17) Common (n=20) Strong (n=37) Heavy (n=15)
    visual distortions
    82%
    80%
    92%
    80%
    color enhancement
    59%
    55%
    68%
    33%
    nausea
    47%
    30%
    65%
    33%
    anxiety
    41%
    60%
    46%
    40%
    music enhancement
    53%
    45%
    57%
    40%
    tactile enhancement
    35%
    20%
    49%
    53%
    stimulation
    53%
    45%
    49%
    27%
    empathy
    47%
    30%
    35%
    40%
    auditory effects
    18%
    25%
    46%
    27%
    focus enhancement
    24%
    45%
    40%
    33%
    euphoria
    35%
    25%
    43%
    33%
    muscle tension
    25%
    38%
    33%
    confusion
    35%
    35%
    30%
    33%
    sedation
    24%
    35%
    30%
    27%
    headache
    24%
    15%
    27%
    13%
    closed-eye visuals
    12%
    15%
    27%
    20%
    introspection
    12%
    20%
    27%
    20%
    body high
    18%
    20%
    22%
    20%
    memory suppression
    18%
    10%
    11%
    20%
    ego dissolution
    18%
    11%
    20%

    Showing top 20 of 31 effects

    Risk Escalation

    Sentiment Analysis

    Average frequency of positive vs adverse effects across dose tiers

    Light n=17
    9 positive 37.2% 7 adverse 27.7%
    Common n=20
    9 positive 33.9% 8 adverse 26.2%
    Strong n=37
    10 positive 39.7% 11 adverse 23.6%
    Heavy n=15
    10 positive 31.3% 8 adverse 25.8%
    View effect breakdown

    Adverse Effects

    Effect Light (n=17) Common (n=20) Strong (n=37) Heavy (n=15) Change
    Nausea
    47%
    30%
    65%
    33%
    -29%
    Anxiety
    41%
    60%
    46%
    40%
    -2%
    Muscle Tension
    25%
    38%
    33%
    +33%
    Confusion
    35%
    35%
    30%
    33%
    -5%
    Headache
    24%
    15%
    27%
    13%
    -43%
    Memory Suppression
    18%
    10%
    11%
    20%
    +13%
    Jaw Clenching
    20%
    11%
    -46%
    Motor Impairment
    15%
    8%
    20%
    +33%
    Increased Heart Rate
    18%
    11%
    -38%
    Thought Loops
    13%
    0%
    Pupil Dilation
    12%
    5%
    -54%
    Sweating
    8%
    0%

    Positive Effects

    Effect Light (n=17) Common (n=20) Strong (n=37) Heavy (n=15) Change
    Color Enhancement
    59%
    55%
    68%
    33%
    -43%
    Music Enhancement
    53%
    45%
    57%
    40%
    -24%
    Tactile Enhancement
    35%
    20%
    49%
    53%
    +50%
    Stimulation
    53%
    45%
    49%
    27%
    -49%
    Empathy
    47%
    30%
    35%
    40%
    -15%
    Focus Enhancement
    24%
    45%
    40%
    33%
    +41%
    Euphoria
    35%
    25%
    43%
    33%
    -5%
    Introspection
    12%
    20%
    27%
    20%
    +69%
    Body High
    18%
    20%
    22%
    20%
    +13%
    Creativity Enhancement
    8%
    13%
    +64%

    Dosage Distribution

    Dose distribution from experience reports

    Insufflated

    Median: 20.0 mg IQR: 8.0–22.0 mg n=13

    Oral

    Median: 20.0 mg IQR: 10.0–25.0 mg n=82

    Real-World Dose Distribution

    62K Doses

    From 192 individual dose entries

    Insufflated (n=32)

    Median: 10.0mg 25th: 5.0mg 75th: 20.0mg 90th: 33.9mg
    mg/kg median: 0.136 mg/kg 75th: 0.22

    Oral (n=136)

    Median: 20.0mg 25th: 9.5mg 75th: 23.0mg 90th: 30.0mg
    mg/kg median: 0.245 mg/kg 75th: 0.323

    Common Combinations

    Most co-occurring substances in experience reports

    Form / Preparation

    Most common forms and preparations reported

    Body-Weight Dosing

    Dose relative to body weight from reports with weight data

    Insufflated

    Median: 0.196 mg/kg IQR: 0.126–0.271 mg/kg n=13

    Oral

    Median: 0.259 mg/kg IQR: 0.119–0.38 mg/kg n=79

    Unknown

    Median: 0.237 mg/kg IQR: 0.232–0.551 mg/kg n=5

    Redose Patterns

    Redosing behavior across 120 reports

    17.5% Redosed
    1.2 Avg Doses
    60m Median Interval

    Legal Status

    EU Council Decision 2003/847/JHA (December 6, 2003) - Member states required to implement control measures and criminal penalties for 2C-T-2, 2C-I, 2C-T-7, and TMA-2
    Country Status Notes
    Argentina Controlled substance Listed as a controlled substance alongside other phenethylamines including 2C-B and 2C-I.
    Australia Schedule 9 Classified as a prohibited substance under the Poisons Standard since 2005. Schedule 9 substances are those which may be abused or misused and are prohibited except for approved medical or scientific research, analytical, teaching, or training purposes with government authorization.
    Austria Illegal (SMG) Prohibited under the Suchtmittelgesetz (Narcotics Act). Possession, production, and sale are illegal.
    Belgium Illegal Added to the list of controlled psychotropic substances on November 8, 2004.
    Brazil Illegal Controlled as of February 18, 2014. Listed on Portaria SVS/MS nº 344, making possession, production, and sale illegal.
    Canada Schedule III (CDSA) Controlled under the Controlled Drugs and Substances Act as of October 31, 2016. Classified as a derivative of 2,5-dimethoxyphenethylamine.
    China Controlled substance Added to the list of controlled substances as of October 2015.
    Denmark Category B Added to Category B of the controlled substances list on August 23, 2003.
    Estonia Schedule I Added to Schedule I in February 2011 alongside several other phenethylamines and synthetic cannabinoids.
    Finland Narcotic drug Classified as a narcotic substance under Finnish drug control legislation.
    Germany Anlage I BtMG Listed in Anlage I (Schedule I) of the Betäubungsmittelgesetz (Narcotics Act) since October 1998. Represents the highest level of control; manufacturing, possession, import, export, purchase, sale, procurement, and dispensing without license are prohibited.
    Italy Tabella I Added to Tabella I (the list of prohibited plants and substances) by Ministry of Health statement on January 11, 2005.
    Japan Designated Substance (Shitei-Yakubutsu) Controlled under the Pharmaceutical Affairs Law. Possession and sale are illegal.
    Latvia Schedule I Listed as a Schedule I controlled substance under national drug legislation.
    Netherlands List I (Opiumwet) The Netherlands was the first country to ban 2C-T-2, classifying it as a hard drug under List I of the Opium Law in April 1999. Unlicensed manufacture, sale, import, trade, and possession can be prosecuted.
    Portugal Controlled substance Law enacted in January 2005 to control 2C-T-2, 2C-I, 2C-T-7, and TMA-2.
    Slovakia Grade 2 Added to Grade 2 (equivalent to Schedule II under the 1971 UN Convention on Psychotropic Substances) in October 2009.
    Sweden Schedule I (Narcotic) First regulated on April 1, 1999 under the Act on the Prohibition of Certain Goods Dangerous to Health (SFS 1999:58), making sale and possession illegal. Subsequently added to Schedule I of the Narcotic Drugs Punishments Act on March 16, 2004, as published in MPA regulation LVFS 2004:3.
    Switzerland Controlled (Verzeichnis D) Specifically named as a controlled substance under Verzeichnis D of the Swiss narcotics legislation.
    United Kingdom Class A Controlled as a Class A substance under the Misuse of Drugs Act 1971 through the phenethylamine catch-all clause. All compounds featured in PiHKAL are prohibited. Class A carries the most severe penalties for possession, manufacture, and import.
    United States Schedule I Federally scheduled under SEC. 1152 of the Food and Drug Administration Safety and Innovation Act of 2012 (S.3187), signed into law in July 2012. Possession, manufacture, and import are illegal. Additional state-level controls exist in Alabama (February 2013), Louisiana (June 2013), Oklahoma (May 2011), Pennsylvania, and Vermont (July 2012).

    Harm Reduction

    drugs.wiki

    Allergy-test and dose accurately: Because active doses are in the low tens of milligrams, always use a 0.001 g (milligram) scale and allergy test 1–2 mg before a first full dose; start low and wait at least 3 hours before considering any change to avoid stacking a delayed onset. Misrepresentation risk is real: pressed “2C‑B” or “mescaline” tablets and powders occasionally contain other phenethylamines; use multiple reagents and, where possible, a drug-checking lab (Energy Control/TEDI-type services) to confirm identity before dosing. Reagents: On Marquis, 2C‑T‑2 typically shows a salmon/orange‑to‑red reaction, contrasting with 2C‑B’s green; no single reagent can confirm identity—use at least Marquis, Mecke, and Froehde and interpret within ~60 seconds. Avoid nasal use: Insufflation produces a very rapid, intense come‑up and is consistently reported to cause severe burning, higher nausea/vomiting rates, and vasoconstriction; 2C‑T‑x intranasal use has been linked to serious toxicity and deaths (notably with 2C‑T‑7). Hydration and heat: Like many psychedelics with mild stimulation, overheating can occur in hot, crowded settings; take breaks to cool down and sip fluids slowly (about 500 mL per hour maximum) to avoid both dehydration and over‑hydration. Redosing and tolerance: Acute tolerance develops rapidly; redosing late in the experience adds side‑effects more than benefits. Leave at least a week between substantial psychedelic sessions to reduce tolerance and mental fatigue. Set/setting and support: Anxiety and body‑load are common at the peak; a trusted sober sitter, calm environment, and controlled sensory input reduce risk of panic and injury. Emergency response: If severe agitation, hyperthermia, or signs of serotonin toxicity occur (high fever, clonus, confusion), seek medical care; lay responders should focus on cooling, reassurance, and avoiding restraints that impair breathing—do not attempt to self‑medicate. Rectal route hygiene: If using rectal administration to reduce nausea, dissolve in sterile water, use clean applicators, and lubricant to minimize mucosal injury and infection risk. Drug checking and ID nuance: 2C‑T‑2 may be sold in capsules or powders; while 2C‑B is often in pressed tablets, both can be confused at point‑of‑sale; lab testing best differentiates them; reagent patterns aid but are not definitive. Legal & sourcing context: EU risk assessment concluded 2C‑T‑2 is a potent hallucinogen with no recognized medical use; many regions control it; legal risk adds to harm if medical help is delayed—carry accurate substance/dose info for responders.

    References

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