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Chemical Information



Alpha-PPP Structure


Known Chemical Data


Systematic (IUPAC) name(RS)-1-Phenyl-2-(1-pyrrolidinyl)-1-propanone
Chemical Nameα-Pyrrolidinopropiophenone
CAS Number19134-50-0
ATC code 
Chemical data 
Molar mass203.28 g/mol
Online Synonyms 
 1.     alpha-Pyrrolidinopropiophenone

2.     1-phenyl-2-pyrrolidin-1-ylpropan-1-one

3.     19134-50-0

4.     1-Phenyl-2-(1-pyrrolidinyl)-1-propanone

5.     1-Propanone, 1-phenyl-2-(1-pyrrolidinyl)-

6.     alpha-PPP

7.     a-Pyrrolidinopropiophenone

8.     AC1L4LUY

9.     alpha-Pyrrolizinopropiophenone

10.  SCHEMBL11037118

11.  CTK4E0631


13.  Propiophenone, 2-(1-pyrrolidinyl)-

14.  AKOS009049710

15.  HE043929

16.  HE321759

17.  1-phenyl-2-(pyrrolidin-1-yl)propan-1-one

18.  1-Propanone,1-phenyl-2-(1-pyrrolidinyl)-

19.  KB-160328

20.  LS-123161





Discovery, History & Research


Alpha-PPP was first described in a US based patent filed by Behrendt; Wilhelm A. (Niederweimar, Kreis Marburg, DT), Stieh; Bernhard (Marburg, DT) back in March 1975. This patent with application number 05/554,902 was finally granted and published in 1977.


Since its first official discussion in the above patent, Alpha-PP has been primarily as a stimulant and appetite suppressant drug similar to its chemical cousin diethylpropion. Unlike many of the other research chemicals available on the market today, Alpha-PPP has been well researched, with even some in vivo animal studies having been conducted over the year.

In Germany it was detected in some “ecstasy” labelled tablets seized by German law enforcement. After some time in the research chemical landscape, it was made illegal in the UK’s blanket ban as a substituted cathinone and may even be considered for scheduling the USA within the analogue act.


Although there have been some interesting in vivo studies, in general, resesearh is limited. However, below is a list of some of the more notable publications:









Chemical Structural Data

As a structural analogue of Diethylcathinone, Alpha-PPP is technically a Cathinone, sharing many of the same chamical attributes. Alpha-PPP is also a related drug to ’-methyl-α-pyrrolidinopropiophenone (MPPP).

Structure-Activity & Chemical Similarity Predictions

Based on the available chemical structural data and information already understood from its chemical analogues and cousins, Alpha-PPP is thought to act on the Norepinephrine and Dopamine pathway, with potential for action withing the Seretonin transporter protein. Further information, based on its few in vivo studies on male Winstar rats shows its ability to be metabolized into many metabolites, including Cathinone itself.

Key Areas of Research


Samples of Alpha-PPP to purchase online may be used in the following scientific applications.  


  • As a forensic sample and/or for forensic chemical catalogues.
  • As a reference sample for Toxicology laboratories.
  • As a chemical reagent and/or intermediate
  • Pharmaceutical Intermediate
  • As a research chemical sample within studying pharmacology of receptor binding assays. Particularly receptors involved Cathinone binding drugs.
  • Affinity and Efficacy Receptor profiling.
  • Reference sample for the application within future therapeutic compounds
  • Pure reference standard for chemical analytical libraries using HPLC, FTIR, NMR and GC/MS equipment

Online Anecdotal Reports

Alpha-PPP has found its way into various online anecdotal discussion boards with the majority of people willing to talk about Alpha-PPP experiences and reviews on platforms such as Errowid and Reddit after reading about it on the Alpha-PPP Wikipedia page.

Below is a collection of some of the larger Alpha-PPP forum posts.

Forum links to anecdotal discussion by those who are able to buy Alpha- PPP online.


Chemical Safety, Legality & Indented Use

Intended use

This is a research chemical compound. Sold as an analytical standard, reagent or laboratory tool for in vitro (outside a living organism) research only. This compound is not for human consumption or any form or in vivo research.


It is the sole responsibility of the purchaser to ensure this compound is legal to purchase and import for research chemical purposes in their country.

Chemical Safety

This compound is intended to be used in strict laboratory conditions, following all proper precautionary protocol for any novel and untested chemical. The toxicological and physiological action of this compound have not been assessed and so extreme caution should be observed when handling this compound. Please follow proper health and safety guidelines, in a well ventilated and well equipped laboratory when handling this compound.


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