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Aleph-2

chemical compound

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Science and natureInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionFeb 10, 2026
Entity authorityQ16527585
Source-derived summary

Aleph-2, or ALEPH-2, also known as 4-ethylthio-2,5-dimethoxyamphetamine, is a psychedelic drug of the phenethylamine, amphetamine, and DOx families. It is one of the Aleph series of compounds. The drug was encountered as a novel designer drug in Europe in 2023.

Use and effects

In his book PiHKAL (Phenethylamines I Have Known and Loved), Alexander Shulgin lists Aleph-2's dose as 4 to 8 mg orally and its duration as 8 to 16 hours. The effects of Aleph-2 have been reported to include "almost no visual phenomena" to "extraordinary visuals and interpretations", visual distortion and movement, enhanced auditory and tactile perception, and a sensation of physical warmth, and residual shakiness and muscle tremors, among others. There is an unpredictability with the dosing and effects of Aleph-2, such that one person who took 4 mg had strong effects including ending up in a fetal position, in relative hibernation for several hours, and with substantial amnesia, whereas another person who took 8 mg experienced only a bare threshold including slight lightheadedness.

Interactions

Pharmacology

Pharmacodynamics

Aleph-2 acts as a serotonin 5-HT2 receptor agonist. The drug is also a weak monoamine oxidase inhibitor (MAOI), with IC50Tooltip half-maximal inhibitory concentration values of 3,200 nM for monoamine oxidase A (MAO-A) and >100,000 nM for monoamine oxidase B (MAO-B). Aleph-2 produces anxiolytic effects in rodents.

Chemistry

Synthesis

The chemical synthesis of Aleph-2 has been described.

Editorial summary

“Aleph-2” enters the record as chemical compound. Crown Archives preserves that source wording while asking what Aleph-2, chemical and compound can confirm, complicate or overturn.

Editorial reviewUseful for establishing the present vocabulary of the subject while preserving a route back to the evidence on which that vocabulary rests. The current lead gives the account dated anchors—2023—that can be checked directly. The selected authority fields contribute no independent date. Its strongest next move is a source search built around Aleph-2, chemical and compound.
Editorial analysis

Why this record matters

“Aleph-2” is worth following because a concise public description often conceals a longer documentary argument. Here, Aleph-2, chemical and compound provides the most credible route into that argument.

Evidence profile

Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated Feb 10, 2026. The linked authority identifier is Q16527585. The first chronological checks are 2023.

Critical limits

Scientific names, classifications and consensus can change while older terminology persists in catalogues and historical literature. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

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  2. Expand the search: follow Aleph-2 primary sources, Aleph-2 archive and Aleph-2 research across catalogues and specialist indexes.
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Source & attribution

This entry incorporates text from Aleph-2” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.