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What is 5-MAPB?

5-(2-methylaminopropyl)benzofuran (5-MAPB) is a synthetic empathogen of the substituted benzofuran class of chemicals. Benzofurans generally produce a sense of euphoria, empathy and stimulation as well as mildly hallucinogenic effects. This chemical class includes other chemicals such as 5-APB, 4-APB and 6-APB among others. 5-MAPB is the N-methylated form of 5-APB, analogous to how MDMA is the N-methylated form of MDA.

5-MAPB in particular is known for its empathogenic and euphoric properties. It is generally seen as less stimulating and more entactogenic than 6-APB.

What are the effects of 5-MAPB?

5-MAPB is a triple reuptake inhibitor for the monoamines norepinephrine, dopamine (likely the cause of its stimulating effects) and serotonin (presumably leading to its empathogenic/euphoric effects) as well as being an agonist for the 5-HT2A and 5-HT2B receptors (most likely the cause of its mildly hallucinogenic effects). Some have speculated that 5-MAPB also works as a releasing agent for the previously mentioned neurotransmitters.

Some of the most commonly reported effects are:

  • Empathy, love, and sociability enhancement
  • Focus enhancement
  • Thought acceleration
  • Analysis enhancement
  • Wakefulness
  • Stimulation
  • Memory enhancement
  • Motivation enhancement
  • Euphoria
  • Compulsive redosing
  • Increased music appreciation

Some of the potential side-effects include:

  • Increased heart rate
  • Difficulty urinating
  • Dehydration
  • Appetite suppression
  • Nausea
  • Temporary erectile dysfunction
  • Increased perspiration
  • Nystagmus


5-MAPB is classified as illegal in:

  • Germany
  • Switzerland
  • United Kingdom

This list is not exhaustive, so do your own research into the legal status in your country before ordering!

Responsible Research with 5-MAPB

Always practice responsible research. You should read and educate yourself before undertaking research with any chemical. The Psychonaut Wiki has some very helpful resources and information on 5-MAPB.

How to Buy 5-MAPB

You can buy 5-MAPB and other phenethylamines like 3-FEA, 2C-B-FLY, and 6-APB here at Chemical-Collective. All of our chemicals are third party lab tested.

All of our chemicals are strictly for research and analytical purposes only and not for human consumption.

If you wish to see NMR results for 5-MAPB or any other chemical, please email us at requests@chemical-collective.com.


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All products are strictly for research purposes only and not for human consumption.

Store in a cool, dry place away from sunlight. Lysergamides and Tryptamines should be kept below 20'c where possible

Product Name: 5-MAPB fumarate

Other Name(s): 5-(2-methylaminopropyl)benzofuran fumarate

IUPAC Name: 5-(2-methylaminopropyl)benzofuran fumarate

CAS: 1823925-53-6

Molar Mass: 225.7 g/mol

5-MAPB Fumarate

5.00 / 5 (13)
- +
NMR Measurment Report
NMR Measurement
Report Available

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Sample name: ST-212 20-07-22
Spectrometer: Bruker 600 MHz Solvent: D2O
Expected compound:
Identified compound:
Estimated purity:
5-MAPB NMR Report Screenshot

Click here for the full report.

SKU: 5MAPB Category: Tags: ,
Read Reviews

13 reviews for 5-MAPB Fumarate

  1. Mario

    Disfunción eréctil? En 2 horas estaba la estaca para matar a Drácula. Yo no he sentido eso, buena sustancia.

  2. Shulg

    Excellent chemical, too bad there is only the fumarate variant. The HCL batch of last year was incredible!!
    What a roll.
    Please remake it avalaible again for France delivery pleaaase

  3. Smugler (verified owner)

    Very fast and niceeee product for reseaerch

  4. eth-kh (verified owner)

    Common reactions with this compound waste large amounts of reagents, so most laborants study this chemical only ocassionally.

  5. Valvola77 (verified owner)

    Ottimo prodotto! Assolutamente consigliato 👍

  6. Valvola77 (verified owner)

    Fantastico prodotto 👍👍👍… consigliato!!!

  7. Psyke33 (verified owner)

    Top notch product !

  8. porkandbeansboy

    Best quality and highest purity, legit 5-MAPB that I’ve only found this vendor to have this fantastic product in stock.

    You won’t be disappointed.

  9. halfslant77 (verified owner)

    On point, great service, great personality, and great shipping. You guys rock! Going to miss you guys from not shipping to US anymore. Wish we could have kept doing business. It was an honor while it lasted!
    Much love!

  10. kojo

    shipped fast, and although the odor is awful, the research was fantastic and very clean, would recommend stocking up

  11. tryppidreams (verified owner)

    Unbelievable product. Highly recommended. Researched well, very pure. Discreet shipping. Could not be happier. It’s a winner. Props to Chemical-Collective for professionalism. You will not be disappointed.

  12. ChickenCobra (verified owner)

    Very clean and quality material. Excellent shipping time too!

  13. Jeffro

    High quality!!

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