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| Other names | 3,4-Norbornyl-2,5-DMPEA; 3,4-Norbornyl-2,5-dimethoxyphenethylamine; 2,5-Dimethoxy-3,4-norbornylphenethylamine; 3,6-Dimethoxy-4-(2-aminoethyl)benzonorbornane |
| Routes of administration | Oral [1] |
| Drug class | Serotonergic psychedelic; Hallucinogen |
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| Pharmacokinetic data | |
| Onset of action | 1–2 hours [1] [2] |
| Duration of action | 32–48 hours [1] [2] |
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| Chemical and physical data | |
| Formula | C15H21NO2 |
| Molar mass | 247.338 g·mol−1 |
| 3D model (JSmol) | |
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2C-G-5, also known as 3,4-norbornyl-2,5-dimethoxyphenethylamine, is a psychedelic drug of the phenethylamine and 2C families. [3] [1] [4] [5] [6] [2] It is one of several homologues of 2C-G (3,4-dimethyl-2,5-dimethoxyphenethylamine). [1] [4] [5] [6] The drug is taken orally. [1] [4] [5] 2C-G-5 was encountered online as a novel designer drug in 2025. [2]
In his book PiHKAL (Phenethylamines I Have Known and Loved) and other publications, Alexander Shulgin lists 2C-G-5's dose as 10 to 16 mg orally and its duration as 32 to 48 hours. [3] [1] [4] [5] [2] The drug's onset is 1 to 2 hours and its time to peak is 2.5 to 3 hours. [1] [2] 2C-G-5 is reported to produce psychedelic effects including visuals, clear and cosmic thinking, and 2C-B-like enhanced eroticism, among others. [1] [2] It is among the most potent of the 2C psychedelics. [1] [4] [5] However, its duration is described as too long, interfering with sleep and resulting in subsequent-day consequences like tiredness and sleepiness. [1] [2] 2C-G-5 was also the longest-lasting drug included in PiHKAL based on its specified duration. [3] [1]
Data on the pharmacology and toxicology of 2C-G-5 are unavailable. [2]
The chemical synthesis of 2C-G-5 has been described. [1]
Analogues of 2C-G-5 include other compounds of the 2C-G and Ganesha series, among others. [3] [1] [6] Examples include 2C-G (2C-G-0), 2C-G-3, 2C-G-4, 2C-G-N, and G-5. [3] [1] [6]
2C-G-5 was first described in the literature by Alexander Shulgin in his 1991 book PiHKAL (Phenethylamines I Have Known and Loved). [1] [4] [5] [6] [2] It was encountered online as a novel designer drug in 2025. [2]
2C-G-5 may be a controlled substance in Canada under phenethylamine blanket-ban language. [7]
Weitere 2C-G Derivate wurden von Shulgin untersucht, namentlich 2C-G-3 (8), 2C-G-4 (9. bis anhin nur synthetisch beschrieben), 2C-G-5 (10; zwei abhängige Stereozentren; Racemat) und 2C-G-N (11) [4]. Sie sind allesamt potente, psychedelisch wirksame Phenethylamine und wirken ebenfalls bemerkenswert lange; mit 2C-G-5 (10) liegt die vielleicht am längsten wirksame Verbindung der Phenylalkylamine überhaupt vor (32—48h)). [...]
2C-phenethylamines and their salts, derivatives, isomers and salts of derivatives and isomers that correspond to the following chemical description : any substance that has a 1-amino-2-phenylethane structure substituted at the 2' and 5' or 2' and 6' positions of the benzene ring by an alkoxy or haloalkoxy group, or substituted at two adjacent carbon atoms of the benzene ring which results in the formation of a furan, dihydrofuran, pyran, dihydropyran or methylenedioxy group — whether or not further substituted on the benzene ring to any extent, whether or not substituted at the amino group by one or two, or a combination of, methyl, ethyl, propyl, isopropyl, hydroxyl, benzyl (or benzyl substituted to any extent) or benzylene (or benzylene substituted to any extent) groups and whether or not substituted at the 2-ethyl (beta carbon) position by a hydroxyl, oxo or alkoxy group — and its salts and derivatives and salts of derivatives, including [...]