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{{SummarySheet}}
{{SubstanceBox/4-HO-MPT}}
{{SubstanceBox/4-HO-MPT}}
{|
|-
|-
| ''[[4-HO-MPT/Summary|Summary sheet: 4-HO-MPT]]''
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'''4-Hydroxy-N-methyl-N-propyltryptamine''' (also known as '''4-HO-MPT''') is a novel and obscure [[hallucinogen]]ic [[psychoactive class::psychedelic]] substance of the [[chemical class::tryptamine]] class and can be considered to be homologous to [[4-HO-DMT]] (i.e. ''Psilocin'') and other hallucinogenic tryptamines with powerful psychedelic effects, yet with its own unique style variations.


Little is currently known about this substance due to its limited history of use, though it is starting to gain interest within the psychonaut community who seek out these types of experiences, being a similar but at the same time distinct variation on the mushroom or [[psilocin]] experience.<ref>http://www.bluelight.org/vb/members/377522-Kaleida|View Profile: Kaleida | Bluelight</ref>
'''4-Hydroxy-N-methyl-N-propyltryptamine''' (also known as '''4-HO-MPT''' or '''Meprocin''') is a novel synthetic [[psychoactive class::psychedelic]] substance of the [[chemical class::tryptamine]] chemical class that produces [[psychedelic]] effects when [[route of administration|administered]]. It is a closely related structural analog of [[4-HO-DMT]] (''Psilocin'') and other hallucinogenic tryptamines with powerful psychedelic effects.


Today 4-HO-MPT is either used rarely as a [[recreational drug use|recreational drug]] or as [[entheogen]]ic compound and is typically acquired through the use of online [[research chemical]] vendors on which it first appeared as recently as mid 2016.  
Very little data exists about the pharmacological properties, metabolism, and toxicity of 4-HO-MPT. It has been sold online as a [[research chemical]] as of 2016.{{citation needed}} It was synthesised and described by Alexander Shulgin in his 1994 book TiHKAL.<ref name="TiHKAL">{{cite book|title=TiHKAL: The Continuation|title-link=TiHKAL|last1=Shulgin|first1=Alexander|last2=Shulgin|first2=Ann|author-link1=Alexander Shulgin|year=1997|publisher=Transform Press|location=United States|isbn=0-9630096-9-9|oclc=38503252|chapter-url=https://erowid.org/library/books_online/tihkal/tihkal23.shtml|chapter=#23. 4-HO-MPT}}</ref>


==Chemistry==
==Chemistry==
Line 15: Line 10:


==Pharmacology==
==Pharmacology==
{{Main|Serotonergic psychedelic}}
{{Further|Serotonergic psychedelic}}
Like with most [[psychedelic]] tryptamines, 4-HO-EPT is thought to act principally as a [[Serotonin#The_5-HT_system|5-HT<sub>2A</sub>]] [[Agonist#Agonists|partial agonist]]. The psychedelic effects are believed to come from 4-HO-EPT's binding efficacy at the 5-HT<sub>2A</sub> receptors. However, the role of these interactions and how they result in the psychedelic experience continues to remain elusive.
4-HO-MPT is a psychedelic drug in the [[Tryptamines|tryptamine]] class of chemical compounds and is a higher homologue of the naturally occurring substituted tryptamine [[psilocin]] as well as being the 4-hydroxyl analog of [[MPT]].<ref>https://www.erowid.org/library/books_online/tihkal/tihkal23.shtml</ref>
 
Like with most [[psychedelic]] tryptamines, 4-HO-MPT is thought to act principally as a [[Serotonin#The_5-HT_system|5-HT<sub>2A</sub>]] [[Agonist#Agonists|partial agonist]]. The psychedelic effects are believed to come from 4-HO-MPT's binding efficacy at the 5-HT<sub>2A</sub> receptors. However, the role of these interactions and how they result in the psychedelic experience continues to remain elusive.


==Subjective effects==
==Subjective effects==
{{effectStub}}
{{effectStub}}
{{Preamble/SubjectiveEffects}}
{{Preamble/SubjectiveEffects}}
===Physical effects===
{{effects/base
*'''[[Effect::Spontaneous tactile sensations]]'''
 
|{{effects/physical|
*'''[[Effect::Spontaneous physical sensations]]'''
*'''[[Effect::Increased heart rate]]'''
*'''[[Effect::Increased heart rate]]'''
*'''[[Effect::Nausea]]'''
*'''[[Effect::Nausea]]'''
*'''[[Effect::Pupil dilation]]'''
*'''[[Effect::Pupil dilation]]'''


===Cognitive effects===
}}
*'''[[Effect::Conceptual thinking]]'''
{{effects/visual|
*'''[[Effect::Cognitive euphoria]]'''
*'''[[Effect::Delusions]]'''
*'''[[Effect::Emotion enhancement]]'''
*'''[[Effect::Immersion enhancement]]'''
*'''[[Effect::Increased music appreciation]]'''
*'''[[Effect::Memory suppression]]'''
**'''[[Effect::Ego death]]'''
*'''[[Effect::Novelty enhancement]]'''
*'''[[Effect::Personal bias suppression]]'''
*'''[[Effect::Thought loops]]'''
*'''[[Effect::Time distortion]]'''
*'''[[Effect::Unity and interconnectedness]]'''
 
===Visual effects===
====Enhancements====
====Enhancements====
*'''[[Effect::Colour enhancement]]'''
*'''[[Effect::Colour enhancement]]'''
Line 59: Line 44:
*'''[[Effect::Diffraction]]'''
*'''[[Effect::Diffraction]]'''


===[[Effect::Geometry]]===
====[[Effect::Geometry]]====


====Hallucinatory states====
====Hallucinatory states====
*'''[[Effect::Transformations]]'''
*'''[[Effect::Transformations]]'''
*'''[[Effect::Internal hallucinations]]''' (''[[effect::autonomous entities]]''; ''[[effect::settings, sceneries, and landscapes]]''; ''[[effect::alterations in perspective]]'' and ''[[effect::scenarios and plots]]'')
*'''[[Effect::Internal hallucination]]''' (''[[effect::autonomous entities]]''; ''[[effect::settings, sceneries, and landscapes]]''; ''[[effect::perspective hallucinations]]'' and ''[[effect::scenarios and plots]]'')
 
}}
|{{effects/cognitive|
*'''[[Effect::Conceptual thinking]]'''
*'''[[Effect::Cognitive euphoria]]'''
*'''[[Effect::Delusion]]'''
*'''[[Effect::Emotion enhancement]]'''
*'''[[Effect::Immersion enhancement]]'''
*'''[[Effect::Increased music appreciation]]'''
*'''[[Effect::Memory suppression]]'''
**'''[[Effect::Ego death]]'''
*'''[[Effect::Novelty enhancement]]'''
*'''[[Effect::Personal bias suppression]]'''
*'''[[Effect::Thought loops]]'''
*'''[[Effect::Time distortion]]'''


===Auditory effects===
}}
{{effects/auditory|
*'''[[Effect::Auditory enhancement|Enhancements]]'''
*'''[[Effect::Auditory enhancement|Enhancements]]'''
*'''[[Effect::Auditory distortion|Distortions]]'''
*'''[[Effect::Auditory distortion|Distortions]]'''
*'''[[Effect::Auditory hallucinations|Hallucinations]]'''
*'''[[Effect::Auditory hallucinations|Hallucinations]]'''
}}
{{effects/transpersonal|
*'''[[Effect::Unity and interconnectedness]]'''
}}
}}
===Experience reports===
Anecdotal reports which describe the effects of this compound within our [[experience index]] include:
{{#ask: [[Category:4-HO-MPT]][[Category:Experience]]|format=ul|Columns=2}}
Additional experience reports can be found here:
*[https://erowid.org/experiences/subs/exp_4HOMPT.shtml Erowid Experience Vaults: 4-HO-MPT]


==Toxicity and harm potential==
==Toxicity and harm potential==
{|  
{{further|Research chemicals#Toxicity and harm potential|Responsible use #Hallucinogens}}
|-
The toxicity and long-term health effects of recreational 4-HO-MPT use do not seem to have been studied in any scientific context and the exact [[Toxicity::toxic dose is unknown]]. This is because 4-HO-MPT is a [[research chemical]] with very little history of human usage.  
| [[File:Lolol.png|17px]]''Main articles: [[Research chemicals#Toxicity and harm potential|Research chemicals § Toxicity and harm potential]]'' ''&'' ''[[Responsible use #Hallucinogens|Responsible use § Hallucinogens]]''
|}
The toxicity and long-term health effects of recreational 4-HO-MPT use do not seem to have been studied in any scientific context and the exact [[Toxicity::toxic dose is unknown]]. This is because 4-HO-MPT is a [[research chemical]] with very little history of human usage. Anecdotal evidence from people within the psychonaut community who have tried 4-HO-MPT suggests that there are no negative health effects attributed to simply trying the drug by itself at low to moderate doses and using it very sparingly (but nothing can be completely guaranteed). [https://www.google.com/ Independent research] should always be done to ensure that a combination of two or more substances is safe before consumption.  


It is strongly recommended that one use [[responsible drug use|harm reduction practices]] when using this drug.
Anecdotal evidence from people within the community who have tried it suggests that there are no negative health effects attributed to simply trying the drug by itself at low to moderate doses and using it very sparingly (but nothing can be completely guaranteed). [https://www.google.com/ Independent research] should always be done to ensure that a combination of two or more substances is safe before consumption.
 
It is strongly recommended that one use [[responsible drug use|harm reduction practices]] when using this substance.


===Tolerance and addiction potential===
===Tolerance and addiction potential===
4-HO-MPT is generally considered [[Addiction potential::not habit-forming]] and the desire to use it can actually decrease with regular consumption. Like with most [[psychedelics]], it is most often thought to be self-regulating.  
4-HO-MPT is generally considered [[Addiction potential::not habit-forming]], and the desire to use it can actually decrease with regular consumption. Like with most [[psychedelics]], it is most often thought to be self-regulating.  


Tolerance to the effects of 4-HO-MPT are built [[Time to full tolerance::almost immediately after ingestion]]. After that, it takes about [[Time to half tolerance::3 days]] for the tolerance to be reduced to half and [[Time to zero tolerance::7 days]] to be back at baseline (in the absence of further consumption). 4-HO-MPT presents cross-tolerance with [[Cross-tolerance::all [[psychedelic]]s]], meaning that after the consumption of 4-HO-MPT all psychedelics will have a reduced effect.
Tolerance to the effects of 4-HO-MPT is built [[Time to full tolerance::almost immediately after ingestion]]. After that, it takes about [[Time to half tolerance::3 days]] for the tolerance to be reduced to half and [[Time to zero tolerance::7 days]] to be back at baseline (in the absence of further consumption). 4-HO-MPT presents cross-tolerance with [[Cross-tolerance::all [[psychedelic]]s]], meaning that after the consumption of 4-HO-MPT all psychedelics will have a reduced effect.


==Legal issues==
===Dangerous interactions===
{{DangerousInteractions/Intro}}
{{DangerousInteractions/Psychedelics}}
 
==Legal status==
Due to its relative obscurity, the possession and sale of 4-HO-MPT is unscheduled in most countries.  
Due to its relative obscurity, the possession and sale of 4-HO-MPT is unscheduled in most countries.  


*'''United Kingdom:''' It is illegal to produce, supply, or import this drug under the Psychoactive Substance Act, which came into effect on May 26th, 2016.<ref>Psychoactive Substances Act 2016 (Legislation.gov.uk) | http://www.legislation.gov.uk/ukpga/2016/2/contents/enacted</ref>
*'''Germany''': 4-HO-MPT is controlled under the NpSG<ref>{{cite web|url=https://www.gesetze-im-internet.de/npsg/anlage.html|title=Anlage NpSG|publisher=Bundesamt für Justiz [Federal Office of Justice]|access-date=December 10, 2019|language=de}}</ref> (''New Psychoactive Substances Act'') as of July 18, 2019.<ref>{{cite web|url=http://www.bgbl.de/xaver/bgbl/start.xav?startbk=Bundesanzeiger_BGBl&jumpTo=bgbl119s1083.pdf|title=Verordnung zur Änderung der Anlage des Neue-psychoaktive-Stoffe-Gesetzes und von Anlagen des Betäubungsmittelgesetzes|publisher=Bundesanzeiger Verlag|work=Bundesgesetzblatt Jahrgang 2019 Teil I Nr. 27|pages=1083-1094|publication-date=July 17, 2019|language=de|issn=0341-1095}}</ref> Production and import with the aim to place it on the market, administration to another person, placing it on the market and trading is punishable. Possession is illegal but not punishable.<ref>{{cite web|url=https://www.gesetze-im-internet.de/npsg/__4.html|title=§ 4 NpSG|publisher=Bundesamt für Justiz [Federal Office of Justice]|access-date=December 10, 2019|language=de}}</ref><ref>{{cite web|url=https://www.gesetze-im-internet.de/npsg/__3.html|title=§ 3 NpSG|publisher=Bundesamt für Justiz [Federal Office of Justice]|access-date=December 10, 2019|language=de}}</ref> The legislator considers it possible that orders of 4-HO-MPT are punishable as an incitement to place it on the market.<ref>{{cite web|url=http://dip21.bundestag.de/dip21/btd/18/085/1808579.pdf|title=Gesetzentwurf der Bundesregierung: Entwurf eines Gesetzes zur Bekämpfung der Verbreitung neuer psychoaktiver Stoffe|page=20|date=May 30, 2016|id=Drucksache 18/8579|publisher=Deutscher Bundestag|language=de}}</ref>
*'''United States:''' 4-HO-MPT is unscheduled in the United States. It may be considered an analog of [[psilocin]] (which is a Schedule I drug under the Controlled Substances Act). As such, the sale for human consumption or the use for illicit non-medical or industrial intents and purposes could be prosecuted as crimes under the Federal Analog Act.
*'''Switzerland''': 4-HO-MPT is not controlled under Buchstabe A, B, C and D. It could be considered legal.<ref>{{cite web|url=https://www.admin.ch/opc/de/classified-compilation/20101220/index.html|title=Verordnung des EDI über die Verzeichnisse der Betäubungsmittel, psychotropen Stoffe, Vorläuferstoffe und Hilfschemikalien|publisher=Bundeskanzlei [Federal Chancellery of Switzerland]|access-date=January 1, 2020|language=de}}</ref>
*'''United Kingdom''': 4-HO-MPT is a Class A drug in the United Kingdom as a result of the tryptamine catch-all clause.<ref>{{cite web|title=Schedule 2: Part I: Class A Drugs|url=http://www.legislation.gov.uk/ukpga/1971/38/schedule/2/part/I|work="Misuse of Drugs Act 1971"|access-date=August 20, 2020|publisher=UK Government}}</ref>
*'''United States''': 4-HO-MPT is unscheduled in the United States. It may be considered an analogue of [[psilocin]] (''4-HO-DMT'') which is a Schedule I drug under the Controlled Substances Act. As such, the sale for human consumption or the use for illicit non-medical or industrial intents and purposes could be prosecuted as crimes under the Federal Analogue Act.{{citation needed}}


==See also==
==See also==
*[[Responsible use]]
*[[Responsible use]]
*[[Research chemical]]
*[[Research chemical]]
Line 100: Line 120:


==External links==
==External links==
*[https://en.wikipedia.org/wiki/4-HO-MPT 4-HO-MPT (Wikipedia)]
*[https://erowid.org/chemicals/4_ho_mpt/4_ho_mpt.shtml 4-HO-MPT (Erowid Vault)]
*[https://isomerdesign.com/PiHKAL/read.php?domain=tk&id=23 4-HO-MPT (TiHKAL / Isomer Design)]
*[http://www.bluelight.org/vb/threads/550416-The-Big-amp-Dandy-4-HO-MPT-Thread The Big & Dandy 4-HO-MPT Thread (Bluelight)]
*[http://www.bluelight.org/vb/threads/550416-The-Big-amp-Dandy-4-HO-MPT-Thread The Big & Dandy 4-HO-MPT Thread (Bluelight)]


==References==
==References==
<references/>
<references />
 
[[Category:Substance]]
[[Category:Psychoactive substance]]
[[Category:Psychoactive substance]]
[[Category:Research chemical]]
[[Category:Hallucinogen]]
[[Category:Psychedelic]]
[[Category:Psychedelic]]
[[Category:Tryptamine]]
[[Category:Tryptamine]]
[[Category:Research chemical]]


{{#set:Featured=true}}
{{#set:Featured=true}}

Latest revision as of 17:12, 29 May 2021

Summary sheet: 4-HO-MPT
4-HO-MPT
Chemical Nomenclature
Common names 4-HO-MPT, Meprocin
Substitutive name 4-hydroxy-N-methyl-N-propyltryptamine
Systematic name 3-[2-(Methylpropylamino)ethyl]-4-indolol
Class Membership
Psychoactive class Psychedelic
Chemical class Tryptamine
Routes of Administration

WARNING: Always start with lower doses due to differences between individual body weight, tolerance, metabolism, and personal sensitivity. See responsible use section.



Oral
Dosage
Threshold 5 mg
Light 10 - 20 mg
Common 20 - 30 mg
Strong 30 - 50 mg
Heavy 50 mg +
Duration
Total 5 - 7 hours
Onset 20 - 60 minutes
Come up 1 - 2 hours
Peak 2 - 3 hours
Offset 1 - 2 hours
After effects 2 - 12 hours









DISCLAIMER: PW's dosage information is gathered from users and resources for educational purposes only. It is not a recommendation and should be verified with other sources for accuracy.

Interactions


4-Hydroxy-N-methyl-N-propyltryptamine (also known as 4-HO-MPT or Meprocin) is a novel synthetic psychedelic substance of the tryptamine chemical class that produces psychedelic effects when administered. It is a closely related structural analog of 4-HO-DMT (Psilocin) and other hallucinogenic tryptamines with powerful psychedelic effects.

Very little data exists about the pharmacological properties, metabolism, and toxicity of 4-HO-MPT. It has been sold online as a research chemical as of 2016.[citation needed] It was synthesised and described by Alexander Shulgin in his 1994 book TiHKAL.[1]

Chemistry

4-HO-MPT, or 4-hydroxy-N,N-methylpropyltryptamine, is a synthetic indole molecule of the tryptamine class. Tryptamines share a core structure comprised of a bicylic indole heterocycle attached at R3 to an amino group via an ethyl side chain. 4-HO-MPT is substituted at R4 of its indole heterocycle with a hydroxyl functional group OH−. It also contains a propyl and ethyl chain bound to the terminal amine RN of its tryptamine backbone (MPT).

Pharmacology

Further information: Serotonergic psychedelic

4-HO-MPT is a psychedelic drug in the tryptamine class of chemical compounds and is a higher homologue of the naturally occurring substituted tryptamine psilocin as well as being the 4-hydroxyl analog of MPT.[2]

Like with most psychedelic tryptamines, 4-HO-MPT is thought to act principally as a 5-HT2A partial agonist. The psychedelic effects are believed to come from 4-HO-MPT's binding efficacy at the 5-HT2A receptors. However, the role of these interactions and how they result in the psychedelic experience continues to remain elusive.

Subjective effects

This subjective effects section is a stub.

As such, it is still in progress and may contain incomplete or wrong information.

You can help by expanding or correcting it.

Disclaimer: The effects listed below cite the Subjective Effect Index (SEI), an open research literature based on anecdotal user reports and the personal analyses of PsychonautWiki contributors. As a result, they should be viewed with a healthy degree of skepticism.

It is also worth noting that these effects will not necessarily occur in a predictable or reliable manner, although higher doses are more liable to induce the full spectrum of effects. Likewise, adverse effects become increasingly likely with higher doses and may include addiction, severe injury, or death ☠.

Experience reports

Anecdotal reports which describe the effects of this compound within our experience index include:

Additional experience reports can be found here:

Toxicity and harm potential

The toxicity and long-term health effects of recreational 4-HO-MPT use do not seem to have been studied in any scientific context and the exact toxic dose is unknown. This is because 4-HO-MPT is a research chemical with very little history of human usage.

Anecdotal evidence from people within the community who have tried it suggests that there are no negative health effects attributed to simply trying the drug by itself at low to moderate doses and using it very sparingly (but nothing can be completely guaranteed). Independent research should always be done to ensure that a combination of two or more substances is safe before consumption.

It is strongly recommended that one use harm reduction practices when using this substance.

Tolerance and addiction potential

4-HO-MPT is generally considered not habit-forming, and the desire to use it can actually decrease with regular consumption. Like with most psychedelics, it is most often thought to be self-regulating.

Tolerance to the effects of 4-HO-MPT is built almost immediately after ingestion. After that, it takes about 3 days for the tolerance to be reduced to half and 7 days to be back at baseline (in the absence of further consumption). 4-HO-MPT presents cross-tolerance with [[Cross-tolerance::all psychedelics]], meaning that after the consumption of 4-HO-MPT all psychedelics will have a reduced effect.

Dangerous interactions

Warning: Many psychoactive substances that are reasonably safe to use on their own can suddenly become dangerous and even life-threatening when combined with certain other substances. The following list provides some known dangerous interactions (although it is not guaranteed to include all of them).

Always conduct independent research (e.g. Google, DuckDuckGo, PubMed) to ensure that a combination of two or more substances is safe to consume. Some of the listed interactions have been sourced from TripSit.

  • [[Wikipedia:Lithium_(medication)|DangerousInteraction::Lithium]] - Lithium is commonly prescribed for the treatment of bipolar disorder. There is a large body of anecdotal evidence that suggests taking it with psychedelics significantly increases the risk of psychosis and seizures. As a result, this combination is strictly discouraged.
  • "[[UncertainInteraction" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]] - Cannabis may have an unexpectedly strong and unpredictable synergy with the effects of 4-HO-MPT. Caution is advised with this combination as it can significantly increase the risk of adverse psychological reactions like anxiety, paranoia, panic attacks, and psychosis. Users are advised to start off with only a fraction of their normal cannabis dose and take long breaks between hits to avoid unintentional overdose.
  • "[[UncertainInteraction" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]] - Stimulants like amphetamine, cocaine or methylphenidate affect many parts of the brain and alter dopaminergic function. This combination can increase the risk of anxiety, paranoia, panic attacks, and thought loops. This interaction may also result in an elevated risk of mania and psychosis.[citation needed]
  • "[[UnsafeInteraction" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]] - Tramadol is well-documented to lower the seizure threshold[3] and psychedelics may act to trigger seizures in susceptible individuals.[citation needed]

Due to its relative obscurity, the possession and sale of 4-HO-MPT is unscheduled in most countries.

  • Germany: 4-HO-MPT is controlled under the NpSG[4] (New Psychoactive Substances Act) as of July 18, 2019.[5] Production and import with the aim to place it on the market, administration to another person, placing it on the market and trading is punishable. Possession is illegal but not punishable.[6][7] The legislator considers it possible that orders of 4-HO-MPT are punishable as an incitement to place it on the market.[8]
  • Switzerland: 4-HO-MPT is not controlled under Buchstabe A, B, C and D. It could be considered legal.[9]
  • United Kingdom: 4-HO-MPT is a Class A drug in the United Kingdom as a result of the tryptamine catch-all clause.[10]
  • United States: 4-HO-MPT is unscheduled in the United States. It may be considered an analogue of psilocin (4-HO-DMT) which is a Schedule I drug under the Controlled Substances Act. As such, the sale for human consumption or the use for illicit non-medical or industrial intents and purposes could be prosecuted as crimes under the Federal Analogue Act.[citation needed]

See also

References

  1. Shulgin, Alexander; Shulgin, Ann (1997). "#23. 4-HO-MPT". TiHKAL: The Continuation. United States: Transform Press. ISBN 0-9630096-9-9. OCLC 38503252. 
  2. https://www.erowid.org/library/books_online/tihkal/tihkal23.shtml
  3. Talaie, H.; Panahandeh, R.; Fayaznouri, M. R.; Asadi, Z.; Abdollahi, M. (2009). "Dose-independent occurrence of seizure with tramadol". Journal of Medical Toxicology. 5 (2): 63–67. doi:10.1007/BF03161089. ISSN 1556-9039. 
  4. "Anlage NpSG" (in Deutsch). Bundesamt für Justiz [Federal Office of Justice]. Retrieved December 10, 2019. 
  5. "Verordnung zur Änderung der Anlage des Neue-psychoaktive-Stoffe-Gesetzes und von Anlagen des Betäubungsmittelgesetzes" (PDF). Bundesgesetzblatt Jahrgang 2019 Teil I Nr. 27 (in Deutsch). Bundesanzeiger Verlag. July 17, 2019. pp. 1083–1094. ISSN 0341-1095. 
  6. "§ 4 NpSG" (in Deutsch). Bundesamt für Justiz [Federal Office of Justice]. Retrieved December 10, 2019. 
  7. "§ 3 NpSG" (in Deutsch). Bundesamt für Justiz [Federal Office of Justice]. Retrieved December 10, 2019. 
  8. "Gesetzentwurf der Bundesregierung: Entwurf eines Gesetzes zur Bekämpfung der Verbreitung neuer psychoaktiver Stoffe" (PDF) (in Deutsch). Deutscher Bundestag. May 30, 2016. p. 20. Drucksache 18/8579. 
  9. "Verordnung des EDI über die Verzeichnisse der Betäubungsmittel, psychotropen Stoffe, Vorläuferstoffe und Hilfschemikalien" (in Deutsch). Bundeskanzlei [Federal Chancellery of Switzerland]. Retrieved January 1, 2020. 
  10. "Schedule 2: Part I: Class A Drugs". "Misuse of Drugs Act 1971". UK Government. Retrieved August 20, 2020.