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1cP-AL-LAD

1-cyclopropanoyl-N6-allyl-6-norlysergic acid diethylamide

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1cP-AL-LAD is a synthetic psychedelic of the lysergamide class. It is a prodrug of AL-LAD, a close structural relative of LSD. It activates serotonin receptors in the brain, producing the visual and cognitive shifts characteristic of classical psychedelics.

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Threshold
< 20 µg
Light
50 – 100 µg
Common
100 – 225 µg
Strong
225 – 350 µg
Heavy
350+ µg
12340 h2 h4 h6 h8 h
1Onset
20m–1h2Come-up
30m–1h3Peak
2.5h–5h4Resolution
2h–3hAftereffects2h–18h
Total7h–10h
Builduprapid
Full reset14 days
Cross-tol.
LSD, psilocybin, mescaline +2 more
Absolute3 entries
Psychotic disordersConcurrent lithium useConcurrent MAOI therapy
Relative5 entries
Serious cardiovascular conditionsHistory of HPPDUnstable psychiatric conditionsPregnancy or breastfeedingConcurrent serotonergic medications
Dosage varies by body weight, tolerance & metabolism · Not medical advice · Terms

AL-LAD, the parent compound, was first synthesized in the 1980s; 1cP-AL-LAD emerged around 2022–2023 by combining structural features of 1cP-LSD[1] and AL-LAD.[2] It was developed to exploit legal gaps created by government bans on earlier analogs. It circulates as blotter paper through online research chemical vendors and remains unscheduled in most jurisdictions.

Subjective effects include geometric visual patterns, brightened colors, time alteration, accelerated thinking, and elevated mood. The experience follows the classical lysergamide arc — visually rich, cognitively expansive, with a light stimulant edge, shaped heavily by mindset and environment. Thought loops, anxious fixation, and difficulty sleeping are common unwanted effects.

1cP-AL-LAD produces no physical dependence, and serotonergic psychedelics carry an extremely high physiological safety margin;[3] rapid tolerance after a single dose makes compulsive use self-limiting.[4] The primary risks are psychological — acute distress, rare persistent visual disturbances, and psychiatric destabilisation, amplified sharply by combinations with MAOIs or lithium. No pharmacological, toxicological, or clinical study of 1cP-AL-LAD exists; its entire profile is inferred from structural analogy.

History[edit]

Discovery

AL-LAD (N6-allyl-6-nor-LSD) was first synthesised in the mid-1980s by Andrew Hoffman and David Nichols, exploring modifications to the LSD scaffold.[5] citation needed It entered the research chemical market in 2013, with studies confirming hallucinogenic potency comparable to LSD.[6]

The N1-acyl prodrug wave

Through the mid-2010s, online vendors sequentially introduced N1-acylated lysergamides — 1P-LSD, 1cP-LSD, and others — exploiting the lag between novel structural analog releases and country-specific bans.[7] Germany's 2021 NpSG revision banned 1cP-LSD and related acyl lysergamides, creating commercial pressure to introduce further variants.[8] 1cP-AL-LAD — merging the cyclopropanoyl group of 1cP-LSD with AL-LAD's allyl scaffold — appeared on vendor sites around 2022–2023.

Scientific characterisation

Two independent forensic studies in 2023 constitute the entire published record. Kavanagh and colleagues characterised the compound's analytical profile and identified 17 impurities in a commercial sample;[9] Tanaka and colleagues identified it in sheet products monitored in Japan.[10] Both noted the complete absence of metabolic or biological activity data. As of May 2026, no pharmacological, toxicological, or clinical study of 1cP-AL-LAD has been published.

Chemistry[edit]

Structural class

1cP-AL-LAD is a lysergamide — a chemical family built on the ergoline ring system. It combines two structural changes to the LSD scaffold: the N6 methyl group is replaced by an allyl chain, creating the AL-LAD core,[6] and a cyclopropanecarbonyl group is attached at the indole nitrogen — the same prodrug design used in 1cP-LSD.[1] It differs from the closely related 1P-AL-LAD only in that acyl group.[9]

Molecular identity

Its molecular formula is C₂₆H₃₁N₃O₂ (molecular weight 417.5 g/mol).[11] No melting point, solubility, or stability data have been published; commercial samples have been examined as powder and on blotter paper.[9]

Pharmacology[edit]

Mechanism of action

inferred No receptor binding data for 1cP-AL-LAD exist.[10] The cyclopropanoyl group at N1 is expected to be cleaved in the body before the drug reaches the brain — confirmed for 1cP-LSD, where human serum hydrolysis yields LSD,[1] and demonstrated for 1P-AL-LAD converting to AL-LAD in human liver tissue.[2]

This prodrug pattern holds across the entire N1-acyl lysergamide class — the acylated forms show weak or no direct receptor activity, yet produce high blood levels of the active parent compound.[12][13][14][15][16] If hydrolysis occurs as expected, the active compound is AL-LAD — a serotonergic psychedelic acting primarily through serotonin receptors, with secondary effects on dopamine signaling.[17]

Pharmacokinetics

inferred No human pharmacokinetic data exist for 1cP-AL-LAD. By analogy with the only N1-acyl lysergamide studied in a controlled human trial, the body likely converts it nearly completely to AL-LAD before it enters circulation — only the deacylated compound appears in blood and urine.[18] LSD's oral bioavailability is approximately 80%.[19] AL-LAD is then broken down by liver enzymes into hydroxylated and dealkylated metabolites.[20][2]

Neuroscience[edit]

Where it acts

inferred If the expected conversion to AL-LAD occurs, the active compound acts on serotonin receptors concentrated on neurons in the prefrontal cortex, increasing electrical activity and disrupting normal communication between brain regions.[17] Blocking those receptors with ketanserin fully reverses the psychedelic effect of LSD — confirming this is the necessary target, a finding presumed to extend to AL-LAD.[21]

Why it matters

The thalamus normally filters incoming sensory signals before they reach conscious awareness; psychedelics disrupt this gating, allowing more unfiltered information through. citation needed This is thought to explain the intensified perception, pattern recognition, and synesthesia of the psychedelic state.

Serotonergic psychedelics also promote rapid growth of new connections between neurons.[22] Whether AL-LAD retains the same neuroplastic potency is unknown — its allyl group alters binding geometry at the receptor, and downstream signaling may differ from LSD.

Subjective Effects[edit]

Summary

The 1cP-AL-LAD experience is expected to follow the classical lysergamide arc — a long, gradual build into a visually rich, cognitively expansive state with a light stimulant character running through it. Geometric patterns emerge across surfaces while time stretches and thinking opens up. The experience bends sharply toward mindset and environment.[23]

Compared to psilocybin, the experience is more outwardly engaged and analytically toned, with stronger visual geometry and less introspective weight. Compared to LSD, no controlled comparison exists for 1cP-AL-LAD specifically; individual variation across lysergamides is substantial.

Effect Grid

Dose Level:
Description

Full psychedelic experience — prominent visual drifting, geometric patterning, colour enhancement, and tracers dominate the visual field. Auditory enhancement and music enhancement are marked. Internal hallucinations may emerge, particularly with eyes closed.

Thought acceleration and conceptual thinking are pronounced. Emotional enhancement amplifies both positive and challenging feelings. Introspective depth increases substantially. Time alteration makes minutes feel stretched or compressed unpredictably.

Body load includes muscle tension, possible nausea during come-up, pupil dilation, and moderate stimulation. Appetite suppression is near-total. Set and setting become critical determinants of experience quality. Sleep is impossible for 8+ hours. Commercial samples may contain active impurities (AL-LAD, 1P-AL-LAD) that modestly alter the experience profile.

Modeled from the effect's dose-dependence curve — not per-substance measurements.

Perception(49)likelihood · intensity
Color enhancement
likely
Geometry
likely
Music enhancement
likely
Auditory enhancement
likely
Color alteration
likely
Environmental patterning
likely
Tracers
likely
Visual breathing
likely
Double vision!
rare

Color alteration · Environmental patterning · Tracers · Visual breathing · Visual drifting · Brightness alteration · Depth perception distortion · Light sensitivity · Perspective distortion · Sound sensitivity · Symmetrical texture repetition · Visual morphing · After-images · Auditory distortion · Peripheral vision distortion · Spatial disorientation · Visual diffraction · Visual haze / noise · Auditory misinterpretation · Ganzfeld effect · Holotropic state · Peripheral misidentification · Proprioceptive distortion · Synesthesia · Touch enhancement · Visual melting · Visual acuity enhancement · Dreaming enhancement · Vestibular distortion · Visual magnification · Visual processing acceleration · Taste enhancement · Flashbacks · Object transformations · Internal hallucinations · Object activation · Visual recursion · Environmental orbism / cubism · External hallucinations · Perspective hallucinations · Visual flipping · Auditory hallucinations · Visual scenery slicing · Persisting hallucinations

Visual drifting · Brightness alteration · Depth perception distortion · Light sensitivity · Perspective distortion · Sound sensitivity · Symmetrical texture repetition · Visual morphing · After-images · Auditory distortion · Peripheral vision distortion · Spatial disorientation · Visual diffraction · Visual haze / noise · Auditory misinterpretation · Ganzfeld effect · Holotropic state · Peripheral misidentification · Proprioceptive distortion · Synesthesia · Touch enhancement · Visual melting · Visual acuity enhancement · Dreaming enhancement · Vestibular distortion · Visual magnification · Visual processing acceleration · Taste enhancement · Flashbacks · Object transformations · Internal hallucinations · Object activation · Visual recursion · Environmental orbism / cubism · External hallucinations · Perspective hallucinations · Visual flipping · Auditory hallucinations · Visual scenery slicing · Persisting hallucinations

Body(39)likelihood · intensity
Pupil dilation
likely
Body scan awareness
likely
Stimulation
likely
Body high
possible
Insomnia
possible
Spontaneous body sensations
possible
Vasoconstriction!
possible
Motor control impairment!
possible
Temperature dysregulation!
possible

Body high · Insomnia · Spontaneous body sensations · Wakefulness · Appetite suppression · Bodily lightness · Heart rate perception changes · Laughter fits · Dry mouth · Dizziness · Body schema distortion · Nausea · Physical fatigue · Restlessness · Tactile euphoria · Tingling / electric sensations · Vibrations / buzzing · Bodily pressures · Excessive sweating · Headache · Muscle tension · Temperature dysregulation · Dehydration sensation · Breathing alteration · Bruxism · Involuntary body movements · Nystagmus (eye wobbles) · Respiratory stimulation · Sexual arousal enhancement · Sexual arousal suppression · Trembling · Vomiting · Bodily dissociation · Tactile hallucination

Wakefulness · Appetite suppression · Bodily lightness · Heart rate perception changes · Laughter fits · Dry mouth · Dizziness · Body schema distortion · Nausea · Physical fatigue · Restlessness · Tactile euphoria · Tingling / electric sensations · Vibrations / buzzing · Bodily pressures · Excessive sweating · Headache · Muscle tension · Dehydration sensation · Breathing alteration · Bruxism · Involuntary body movements · Nystagmus (eye wobbles) · Respiratory stimulation · Sexual arousal enhancement · Sexual arousal suppression · Trembling · Vomiting · Bodily dissociation · Tactile hallucination

Thinking(39)likelihood · intensity
Aesthetic enhancement
likely
Cognitive flexibility
likely
Conceptual thinking
likely
Cognitive euphoria
possible
Immersion enhancement
possible
Increased nature relatedness
possible
Decision impairment!
possible
Suggestibility enhancement!
possible
Compulsive redosing urge!
rare

Cognitive euphoria · Immersion enhancement · Increased nature relatedness · Introspection enhancement · Novelty enhancement · Openness enhancement · Pattern recognition enhancement · Thought acceleration · Thought connectivity · Creativity enhancement · Multiple thought streams · Humor enhancement · Analysis enhancement · Cognitive impairment · Synchronicity · Thought loops · Focus enhancement · Information processing enhancement · Motivation enhancement · Analysis suppression · Cognitive fatigue · Confusion · Focus suppression · Information processing suppression · Memory fragmentation · Memory replays · Memory suppression · Thought disorganization · Language enhancement · Cognitive dysphoria · Language suppression · Compulsive redosing urge · Delusions of sobriety · Delusions

Introspection enhancement · Novelty enhancement · Openness enhancement · Pattern recognition enhancement · Thought acceleration · Thought connectivity · Creativity enhancement · Multiple thought streams · Humor enhancement · Analysis enhancement · Cognitive impairment · Synchronicity · Thought loops · Focus enhancement · Information processing enhancement · Motivation enhancement · Analysis suppression · Cognitive fatigue · Confusion · Focus suppression · Information processing suppression · Memory fragmentation · Memory replays · Memory suppression · Thought disorganization · Language enhancement · Cognitive dysphoria · Language suppression · Delusions of sobriety · Delusions

Feeling(13)likelihood · intensity
Emotional enhancement
possible
Emotional lability
possible
Euphoria
possible
Simultaneous emotions
possible
Empathy enhancement
possible
Anxiety
possible
Paranoia!
possible
Depression!
rare
Mania!
rare

Simultaneous emotions · Empathy enhancement · Anxiety · Catharsis · Anxiety suppression · Dysphoria · Irritability · Mania

Catharsis · Anxiety suppression · Dysphoria · Irritability

Self(19)likelihood · intensity
Derealization
possible
Emotional susceptibility
possible
Social connection
possible
Trust enhancement
possible
Communication enhancement
possible
Flow state
possible
Sociability enhancement
possible
Depersonalization
possible
Self-control suppression!
v.rare

Communication enhancement · Flow state · Sociability enhancement · Depersonalization · Disinhibition · Communication suppression · Ego inflation · Sociability suppression · Social disconnection · Boundary dissolution · Cognitive disconnection · Ego dissolution · Identity alteration · Telepathic feelings

Disinhibition · Communication suppression · Ego inflation · Sociability suppression · Social disconnection · Boundary dissolution · Cognitive disconnection · Ego dissolution · Identity alteration · Telepathic feelings

Time(6)likelihood · intensity
Time alteration
likely
Present-moment absorption
possible
Temporal disorientation
possible
Deja vu
possible
Jamais vu
rare
Time cessation
v.rare

Time cessation

Transpersonal(12)likelihood · intensity
Unity and interconnectedness
possible
Existential realization
rare
Noetic insight
rare
Transpersonal feelings
rare
Non-dual awareness
v.rare
Entity contact
v.rare
Transpersonal memory access
v.rare
Transpersonal visions
v.rare
Cessation
v.rare

Entity contact · Transpersonal memory access · Transpersonal visions · Cessation · Death-rebirth sequence · Near-death experience · Voidness

Death-rebirth sequence · Near-death experience · Voidness

Awareness(7)likelihood · intensity
Personal insight
possible
Cognitive dissonance
possible
Lucid dreaming enhancement
possible
Lucidity enhancement
possible
Mindfulness enhancement
possible
Reality testing impairment!
rare
Recursive awareness
rare

Mindfulness enhancement · Recursive awareness

Likelihood: how common this effect is at the selected dose level.This effect has safety implications — review before use.

Timeline

Safety[edit]

Harm
Acute toxicity
Negligible
Chronic toxicity
Negligible
Withdrawal
None
Tolerance buildup
rapid
Tolerance reset
14 days
Dependence
Physical
None
Psychological
Negligible
Compulsive redosing
Negligible
Dose escalation
Negligible
Cross-tol.
LSD · psilo · mesc
Risk Shape
TOXPHYPSYWDRREDTOL

Toxicity

inferred No toxicity data exist for 1cP-AL-LAD — no lethal dose, no therapeutic index, no organ damage assessment.safety citation needed

Acute toxicity

Serotonergic psychedelics carry an extremely high physiological safety margin. No human death has been attributed solely to direct LSD toxicity in the clinical literature — psychological risks dominate over organ damage at recreational doses.[3] This class-level assessment is presumed to extend to 1cP-AL-LAD, but no substance-specific confirmation exists.

Cardiovascular effects

LSD at 100–200 µg produces moderate, self-limiting increases in heart rate and blood pressure.[24][25] Similar effects are expected for any compound that releases AL-LAD in the body, but have not been measured for 1cP-AL-LAD.safety citation needed

Impurity exposure

One commercial sample contained 17 impurities, including confirmed AL-LAD and 1P-AL-LAD plus 15 additional compounds identified only by mass spectral data.[9] Unintended exposure to pharmacologically active impurities is a real risk specific to the unregulated supply chain.

Psychological risks

In a nationally representative sample of psychedelic users (N = 613), 40.9% reported a challenging or distressing experience, and functional impairment lasting more than one day occurred in 8.9%.[23] Key risk factors include negative mindset, disagreeable environment, and higher-than-intended dose.[23]

Some people develop ongoing visual disturbances — geometry, trailing, halos — that persist after the drug experience ends.[26][27] Psychedelics can also trigger psychotic episodes in people with a personal or family history of psychotic disorders; lithium co-use was identified as the top medication risk factor for severe outcomes.[23]

Tolerance and dependence

Tolerance

Tolerance develops almost immediately after a single dose. In rat studies, serotonin receptor binding in the cortex decreased significantly within three days of repeated dosing and recovered within four days of stopping.[4] Cross-tolerance extends across serotonergic psychedelics — LSD, psilocybin, mescaline, and structural analogs — reflecting the shared serotonin receptor mechanism.

Community consensus places full tolerance reset at approximately 14 days.safety citation needed

Dependence

Serotonergic psychedelics have negligible physical dependence liability and do not support compulsive self-administration in animal models.[28] Rapid tolerance inherently discourages repeated use. No withdrawal has been described for the lysergamide class.

Drug interactions

Serotonergic combinations

Combining 1cP-AL-LAD with drugs that raise serotonin levels poses a risk of serotonin overload — a dangerous state involving high fever, muscle rigidity, and seizures. Tramadol blocks serotonin reuptake[29] and has produced marked serotonin syndrome in overdose;[30] combined with a serotonin receptor activator, it creates a mechanistically dangerous interaction.safety citation needed

MAOIs block the breakdown of serotonin; combining them with a serotonin receptor activator dramatically amplifies toxicity risk. No specific data exist for this combination with 1cP-AL-LAD.

Lithium

Co-use of lithium with psychedelics is associated with seizure risk and amplified, unpredictable effects. Lithium was identified as the top medication risk factor for severe adverse psychedelic outcomes.[23]

Cannabis

The interaction between cannabis and psychedelics is poorly characterized. CBD may reduce the psychedelic effect,[31] but the clinical significance is unknown. THC may increase anxiety and confusion.

Pharmacological reversal

Ketanserin — a drug that blocks serotonin receptors — reverses LSD-induced psychedelic effects when given after the drug.[21] This reversal is expected to extend to 1cP-AL-LAD and may serve as an emergency intervention. Benzodiazepines are used for acute anxiety management.

Contraindications

inferred No contraindication data specific to 1cP-AL-LAD exist. The following are class-level inferences for serotonergic psychedelics:

Absolute contraindications:

  • Personal history of psychotic disorders (schizophrenia spectrum, bipolar disorder with psychotic features)
  • Concurrent lithium use — associated with seizures and dangerously amplified effects[23]
  • Concurrent MAOI therapy — serotonin toxicity risk

Relative contraindications:

  • Personal or family history of HPPD[26]
  • Serious heart conditions — moderate stimulant effects expected[24]
  • Concurrent serotonergic medications (SSRIs, SNRIs, tramadol) — attenuated or unpredictable effects; serotonin toxicity risk with tramadol[29]
  • Pregnancy or breastfeeding — no safety data exist
  • Unstable psychiatric conditions — risk of destabilisation

safety citation needed

Harm Reduction[edit]

Forms & Identification

Reagent ResultsNot recorded+ add reagent results
AppearanceNot recorded+ add appearance
Red FlagsNot recorded+ add red flags

1cP-AL-LAD circulates almost exclusively as blotter paper. Ehrlich's reagent confirms the presence of an indole compound — it reacts to the ergoline core shared by all lysergamides. It cannot distinguish 1cP-AL-LAD from LSD, AL-LAD, or other lysergamides.

One commercial sample contained 17 impurities including other active lysergamides.[9] A positive Ehrlich test confirms a lysergamide is present — not which one, and not that it is pure.

Guidelines

  • Test the material. An Ehrlich reagent test confirms the presence of an indole compound. It does not confirm identity or purity.
  • Start low. With no clinical data defining the dose-response curve, begin at the lower end of reported ranges and wait at least two hours before assessing whether the dose is sufficient.
  • Have a sitter. A sober, trusted person present provides a safety anchor, especially at higher doses or first experiences.
  • Prepare the body. Eat a light meal a few hours before. Stay hydrated. Avoid caffeine and other stimulants.
  • Prepare the mind. Set an intention. Avoid tripping during periods of acute emotional distress, grief, or anxiety.
  • Clear the schedule. The experience lasts many hours with residual effects beyond that. Plan for a full day with no obligations and allow a rest day after.
  • Avoid redosing. Tolerance develops immediately. A second dose within hours produces diminished effects and extends duration without proportional intensification.

Set & Setting

The lysergamide experience is shaped heavily by mindset and environment.[23] A comfortable, familiar space with trusted company substantially reduces the probability of a distressing experience. Novel or stimulating environments amplify both positive and negative directions of the experience.

The prodrug conversion step may produce a slower onset than LSD. Patience during the come-up reduces the risk of redosing too early.

Aftercare & integration. The hours and days following a lysergamide experience are a window for processing what surfaced. Write down impressions, emotions, and imagery while memory is fresh — even fragments are useful. Avoid making major life decisions in the first 48 hours.

If the experience was challenging or distressing, talk it through with a trusted person or a therapist experienced in psychedelic integration — this can prevent distress from consolidating. Seek professional attention if persistent anxiety, depersonalisation, or visual disturbances last more than a few days.

Recovery & Support

Lysergamides carry negligible physical dependence risk, and compulsive use patterns are rare due to rapid tolerance. Psychological difficulty following psychedelic use — persistent anxiety, identity confusion, or difficulty reintegrating the experience — can occur and warrants support.

Resources for psychedelic-specific support include the Fireside Project (call or text 62-FIRESIDE) and MAPS integration resources. If visual disturbances persist beyond two weeks, consult a clinician familiar with HPPD.

Recovery resources, crisis lines, and support pathways → View all

Emergency Response

Most difficult psychedelic experiences are psychologically distressing but not medically dangerous. The distinction matters:

Recognising an emergency:

  • Expressed intent to harm self or others
  • Complete dissociation from reality with inability to respond to voice or touch
  • Seizure activity
  • Signs of serotonin syndrome (rigid muscles, rapid heart rate, high temperature, agitation) — particularly if other serotonergic substances were taken

Immediate steps:

  • 1. Move the person to a calm, quiet environment if safe to do so
  • 2. Speak in a slow, reassuring voice — remind them who they are, where they are, and that the effects are temporary
  • 3. Do not restrain unless there is immediate danger of self-harm
  • 4. If symptoms suggest serotonin toxicity, seizure, or loss of consciousness, call emergency services immediately
  • 5. Place an unconscious person in the recovery position

What to tell the dispatcher: Name the substance (1cP-AL-LAD, a lysergamide psychedelic), estimated dose, time of ingestion, and current symptoms. Good Samaritan laws in many jurisdictions protect people who call for help during a drug-related emergency.

references

  1. [1] 
    ^abcBrandt SD, Kavanagh PV, Westphal F, Stratford A, Odland AU et al. (2020) Return of the lysergamides. Part VI: Analytical and behavioural characterization of 1-cyclopropanoyl-d-lysergic acid diethylamide (1CP-LSD) — Drug Testing and Analysis doi:10.1002/dta.2789
  2. [2] 
    ^abcBrandt SD, Kavanagh PV, Westphal F, Pulver B, Schwelm HM, Whitelock K, Stratford A, Auwärter V, Halberstadt AL (2022) Analytical profile, in vitro metabolism and behavioral properties of the lysergamide 1P-AL-LAD — Drug Testing and Analysis doi:10.1002/dta.3281
  3. [3] 
    ^abLuethi D, Liechti ME (2020) Designer drugs: mechanism of action and adverse effects — Archives of Toxicology doi:10.1007/s00204-020-02693-7
  4. [4] 
    ^abBuckholtz NS, Zhou DF, Freedman DX, Potter WZ (1990) Lysergic acid diethylamide (LSD) administration selectively downregulates serotonin2 receptors in rat brain — Neuropsychopharmacology PMID:1969270
  5. [5] 
    ^Pfaff RC, Huang X, Marona-Lewicka D, Oberlender R, Nichols DE (1994) Lysergamides revisited — NIDA Research Monograph PMID:8742794
  6. [6] 
    ^abBrandt SD, Kavanagh PV, Westphal F, Elliott SP, Wallach J, Colestock T, Burrow TE, Chapman SJ, Stratford A, Nichols DE, Halberstadt AL (2017) Return of the lysergamides. Part II: Analytical and behavioural characterization of N6-allyl-6-norlysergic acid diethylamide (AL-LAD) and (2'S,4'S)-lysergic acid 2,4-dimethylazetidide (LSZ) — Drug Testing and Analysis doi:10.1002/dta.1985