What Is 2C-PH

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Last updated: April 15, 2026

Quick Answer: 2C-PH is a lesser-known synthetic psychedelic compound from the 2C family, first synthesized in the 1980s by Alexander Shulgin. It is structurally similar to 2C-B but has not been widely studied or reported in human use.

Key Facts

2C-PH was first synthesized in the 1980s by chemist Alexander Shulgin
It belongs to the 2C family of phenethylamine psychedelics
Very limited human usage data exists for 2C-PH
The compound has not been scheduled under international drug conventions
It is structurally similar to 2C-B but with a phenyl ring substitution

Overview

2C-PH is a synthetic psychedelic substance belonging to the 2C family of phenethylamines, a class of drugs known for their hallucinogenic and stimulant properties. First developed in the 1980s, it remains one of the lesser-documented compounds in this group, with minimal scientific or clinical research available.

Like other 2C drugs, 2C-PH acts primarily as a serotonin receptor agonist, particularly affecting the 5-HT2A receptor, which is linked to altered perception and mood changes. Due to its obscurity, it has not gained widespread attention in either recreational or therapeutic contexts.

Synthetic origin: 2C-PH was first synthesized by Alexander Shulgin, a renowned pharmacologist and chemist, during his research into psychoactive phenethylamines in the 1980s.
Chemical classification: It is categorized as a 2,5-dimethoxyphenethylamine, sharing core structural features with other psychedelics like 2C-B and 2C-E.
Substitution pattern: The compound features a phenyl group at the alpha carbon, distinguishing it from other 2C variants and potentially altering its pharmacological profile.
Receptor activity: It primarily binds to serotonin 5-HT2A receptors, which are responsible for the hallucinogenic effects common to classical psychedelics.
Research status: As of 2023, no peer-reviewed clinical studies on 2C-PH in humans have been published, making its safety and efficacy largely unknown.

How It Works

2C-PH interacts with the brain’s neurotransmitter systems, particularly those involving serotonin, to produce altered states of consciousness. Its mechanism is similar to other psychedelics but modulated by its unique chemical structure.

5-HT2A Agonism: 2C-PH acts as a partial agonist at serotonin 5-HT2A receptors, triggering changes in perception, mood, and cognition within 30 to 60 minutes of ingestion.
Metabolism: The compound is metabolized in the liver, primarily via demethylation and oxidation, though exact metabolic pathways remain unconfirmed due to lack of studies.
Dosage range: Based on anecdotal reports, active doses may range from 10 to 30 mg, though potency varies significantly between individuals.
Duration of effects: Effects typically last between 6 to 10 hours, longer than 2C-B but shorter than LSD, depending on dose and metabolism.
Neurochemical impact: In addition to serotonin, 2C-PH may interact with dopamine and norepinephrine receptors, contributing to mild stimulant effects.
Psychoactive profile: Users report visual distortions, enhanced color perception, and altered thought patterns, though reports are extremely limited and unverified.

Comparison at a Glance

Below is a comparison of 2C-PH with related compounds in the 2C family and other psychedelics:

Compound	Onset Time	Duration	Active Dose	Legal Status
2C-PH	30–60 min	6–10 hrs	10–30 mg	Unregulated in most countries
2C-B	45–75 min	4–8 hrs	15–25 mg	Controlled in US, UK, and EU
2C-E	60–90 min	8–12 hrs	10–20 mg	Illegal in multiple jurisdictions
LSD	20–40 min	8–12 hrs	50–150 µg	Internationally scheduled
Psilocybin	20–40 min	4–6 hrs	5–20 mg	Illegal federally, decriminalized in some US cities

This table highlights that 2C-PH has a moderate onset and duration compared to other psychedelics. Its unregulated status in many countries contrasts with stricter controls on substances like 2C-B and LSD, though this does not imply safety. The lack of human data makes direct comparisons speculative, and dosing should be approached with extreme caution.

Why It Matters

Understanding obscure psychedelics like 2C-PH is important for public health, forensic science, and drug policy. As new psychoactive substances emerge, accurate information helps prevent misuse and informs regulatory decisions.

Emerging substance: 2C-PH may appear in unregulated research chemical markets, posing risks due to unknown purity and dosage.
Legal gray area: Its status as an unscheduled compound in many countries allows legal loopholes, increasing potential for unregulated distribution.
Forensic challenges: Law enforcement and toxicology labs may lack reference standards to detect 2C-PH in drug screenings.
Therapeutic potential: Like other psychedelics, it could have psychiatric research applications, though no studies currently exist.
Harm reduction: Providing factual data helps users make informed decisions and reduces risks associated with unknown substances.
Scientific curiosity: Studying 2C-PH contributes to understanding how chemical modifications affect psychedelic potency and safety.

As interest in psychedelic compounds grows, even obscure substances like 2C-PH warrant attention. While not currently a major public health concern, its potential for misuse and lack of data underscore the need for ongoing research and education.