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Weberine
Names

IUPAC name 5,6,7,8-tetramethoxy-2-methyl-3,4-dihydro-1H-isoquinoline
Other names 5,6,7,8-Tetramethoxy-2-methyl-1,2,3,4-tetrahydroisoquinoline; 5,6,7,8-Tetramethoxy-2-methyl-THIQ
Identifiers
CAS Number	74046-24-5
3D model (JSmol)	Interactive image
ChEMBL	ChEMBL1195906
ChemSpider	137768
PubChem CID	156448
CompTox Dashboard (EPA)	DTXSID40224945
InChI InChI=1S/C14H21NO4/c1-15-7-6-9-10(8-15)12(17-3)14(19-5)13(18-4)11(9)16-2/h6-8H2,1-5H3 Key: VMPOVULYLBHXAO-UHFFFAOYSA-N
SMILES CN1CCC2=C(C1)C(=C(C(=C2OC)OC)OC)OC
Properties
Chemical formula	C₁₄H₂₁NO₄
Molar mass	267.325 g·mol⁻¹
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Weberine, also known as 5,6,7,8-tetramethoxy-2-methyl-1,2,3,4-tetrahydroisoquinoline, is a tetrahydroisoquinoline and cyclized phenethylamine alkaloid found in Pachycereus pringlei and other cacti.^[1]^[2]^[3]

References

^ Lundström, Jan (1983). "Chapter 6 Simple Isoquinoline Alkaloids". The Alkaloids: Chemistry and Pharmacology. Vol. 21. Elsevier. pp. 255–327. doi:10.1016/s0099-9598(08)60052-8. ISBN 978-0-12-469521-4. TABLE 1: SIMPLE ISOQUINOLINE ALKALOIDS [...] TABLE II SIMPLE ISOQUINOLINE ALKALOIDS IN THE FAMILY OF CACTACEAE [...] [...] Pachycereus pringlei (S. Wats) Br&R: Heliamine (10), Lemaireocereine (7), Tehaunine (34), Weberine (40), Tehaunine N-oxide (34a). In Pachycereus pringlei, heliamine (10), tehaunine (34), lemaireocereine (7), and weberine (40) were identified (59).
^ Keeper Trout & friends (2013). Trout's Notes on The Cactus Alkaloids Nomenclature, Physical properties, Pharmacology & Occurrences (Sacred Cacti Fourth Edition, Part C: Cactus Chemistry: Section 1) (PDF). Mydriatic Productions/Better Days Publishing.
^ Menachery, Mary D.; Lavanier, Gregory L.; Wetherly, Mark L.; Guinaudeau, Hélène; Shamma, Maurice (1986). "Simple Isoquinoline Alkaloids". Journal of Natural Products. 49 (5): 745–778. Bibcode:1986JNAtP..49..745M. doi:10.1021/np50047a001. ISSN 0163-3864. Retrieved 20 May 2025.

External links

Weberine - Isomer Design

Phenethylamines

Entactogens: Lophophine
MDPEA
MDMPEA

Amphetamines

Stimulants: 2-FA
2-FMA
3-FA
3-FMA
β-Phenylmethamphetamine
Acridorex
Alfetamine
Amfecloral
Amfepentorex
Amphetamine
- Dextroamphetamine
- Levoamphetamine
Amphetaminil
Benfluorex
Benzphetamine
Cathine
Clobenzorex
Dimethylamphetamine
Ephedrine
Ephenidine
Etafedrine
Etilamfetamine
Famprofazone
Fencamfamin
Fencamine
Fenethylline
Fenfluramine
- Dexfenfluramine
- Levofenfluramine
Fenproporex
Flucetorex
Fludorex
Formetorex
Furfenorex
Gepefrine
4-Hydroxyamphetamine
Iofetamine
Isopropylamphetamine
Lefetamine
Lisdexamfetamine
Mefenorex
Metaraminol
Methamphetamine
- Dextromethamphetamine
- Levomethamphetamine
Methoxamine
Methoxyphenamine
MMA
Morforex
Norfenfluramine
L-Norpseudoephedrine
α,N-Diethylphenylethylamine
Oxifentorex
Oxilofrine
Ortetamine
PBA
PBMA
PCA
PCMA
PFA
PFMA
PIA
PIMA
PMA
PMEA
PMMA
Phenylpropanolamine
Pholedrine
Prenylamine
Propylamphetamine
Pseudoephedrine
Sibutramine
Tiflorex
Xylopropamine
Zylofuramine

Others: 3,4-DCA
Amiflamine
Cafedrine
Deprenyl
- D-Deprenyl
- Selegiline (L-deprenyl)
DiFMDA
Thiamphenicol
UWA-101 (α-cPr-MDMA)

Phentermines

Entactogens: MDPH
MDMPH

Others: Cericlamine

Cathinones

Phenylisobutylamines
(and further-extended)

Stimulants: α-Propylphenethylamine
Hexapradol
Phenylisobutylamine (α-ethylphenethylamine)

Catecholamines
(and close relatives)

Cyclized
phenethylamines

Phenylalkylpyrrolidines	α-PBP α-PHP α-PPP α-PVP MDPBP MDPPP MDPV 4-MePBP 4-MePHP 4-MePPP Fluorolintane MOPPP MOPVP MPBP MPHP MPPP Naphyrone PEP Prolintane Pyrovalerone
2-Benzylpiperidines (phenidates)	2-Benzylpiperidine 3-Bromomethylphenidate 3-Chloromethylphenidate 3-Methylmethylphenidate 3,4-Dichloro-2-benzylpiperidine 3,4-Dichloroethylphenidate 3,4-Dichloromethylphenidate 4-Bromoethylphenidate 4-Bromomethylphenidate 4-Chloromethylphenidate 4-Fluoroethylphenidate 4-Fluoroisopropylphenidate 4-Fluoromethylphenidate 4-Methyl-2-benzylpiperidine 4-Methylisopropylphenidate 4-Methylmethylphenidate 4-Nitromethylphenidate α-Acetyl-2-benzylpiperidine α-Keto-2-benzylpiperidine CPMBP Desoxypipradrol (2-DPMP) Difemetorex Ethylnaphthidate (HDEP-28) Ethylphenidate Isopropylnaphthidate Isopropylphenidate MDMPH Methylnaphthidate (HDMP-28) Methylphenidate Phacetoperane Pipradrol Propylphenidate Rimiterol Ritalinamide Ritalinic acid SCH-5472 Serdexmethylphenidate
Phenylmorpholines (phenmetrazines)	(2R,3R)-Hydroxybupropion 2-(2,5-Dimethoxy-4-bromophenyl)morpholine 2-Fluorophenmetrazine 2-Methylphenmetrazine 2-Phenylmorpholine 2-Phenyl-3,6-dimethylmorpholine 3-Chlorophenmetrazine (PAL-594) 3-Fluorophenetrazine 3-Fluorophenmetrazine (PAL-593) 3-Methoxyphenmetrazine 3-Methylphenmetrazine (PAL-773) 4-Fluorophenmetrazine (PAL-748) 4-Methylphendimetrazine 4-Methylphenmetrazine (PAL-747) 2C-B-morpholine Fenbutrazate Fenmetramide Flumexadol G-130 Isophenmetrazine Manifaxine Methylenedioxyphenmetrazine Morazone N-Ethylphenmetrazol Naphthylmetrazine (PAL-704) Naphthylmorpholine (PAL-678) Oxaflozane PDM-35 PF-219,061) Phendimetrazine Phenetrazine Phenmetetrazine Phenmetrazine Phenmetrazol Pseudophenmetrazine Radafaxine ((2S,3S)-hydroxybupropion)
Phenyloxazolamines (aminorexes)	3-Methylaminorex 4-Ethylaminorex (4-EAR) 4'-Fluoroaminorex 4-Methylaminorex (4-MAR) 4,4'-Dimethylaminorex (4,4'-DMAR) 2C-B-aminorex 2F-MAR 4B-MAR 4C-MAR 4F-MAR Aminorex Clominorex Cyclazodone Ephedroxane Fenozolone Fluminorex MDMAR Methylenedioxyaminorex (MDAR) N-Methylcyclazodone N,N-Dimethylaminorex Pemoline Thozalinone
Isoquinolines and tetrahydroisoquinolines	Anhalamine Anhalidine Anhalinine Anhalonidine Anhalonine Anhalotine Arizonine Calycotomine Carnegine (pectenine) Corypalline Debrisoquine Deglucopterocereine Deutetrabenazine Diclofensine DOB-CR DOM-CR Esproquin Gigantine Hedycarine Heliamine Hydrastinine Hydrocotarnine Hydrohydrastinine (MDMTHIQ; MDMA-CR) Isoanhalamine Isoanhalidine Isoanhalonidine Isocorypalline Isopellotine Isosalsoline Lemaireocereine Longimammamine Longimammatine Longimammidine Longimammosine Lophocerine Lophophorine Lophotine MDMA-CR Mescalotam N-Methylanhalinine N-Methylheliamine N-Methylisosalsoline N-Methyl-DOM-CR (Beatrice-CR) N-Methyl-THIQ (METH-CR) Nomifensine Norsalsolinol Nortehaunine Norweberine O-Methylanhalonidine O-Methylpellotine Pachycereine Pellotine Perafensine Peyoglutam Peyophorine Peyotine PMMA-CR Quinisocaine Reticuline Salsolidine Salsoline Salsolinol TDIQ (MDTHIQ, MDA-CR) Tehaunine Tehaunine N-oxide Tepenine Tetrabenazine Tetrahydroisoquinoline (THIQ; AMPH-CR) Tetrahydropapaveroline Tilisolol Tretoquinol Uberine Valbenazine Weberidine Weberine Zelandopam
2-Aminoindanes	2-Aminoindane (2-AI) 5-IAI Aprindine BFAI BFMAI DHAI DOM-AI ETAI Indanorex Indantadol MDAI MDMAI MEAI (5-MeO-AI) MMAI NM-2-AI PNU-99,194 TAI
2-Aminotetralins	2-Aminotetralin (2-AT) 5-OH-DPAT 6-CAT 7-OH-DPAT 8-OH-DPAT AS-19 CHF-1024 DOM-AT MDAT MDMAT Nolomirole UH-232
Others / unsorted	1-Aminomethylindanes (e.g., 2CB-Ind, AMMI, jimscaline) 2-ADN 2-Benzhydrylpyrrolidine 3-Benzhydrylmorpholine 3-Phenylpiperidines (e.g., 3-phenylpiperidine, OSU-6162 (PNU-96391), LPH-5, LPH-48) 6-AB AL-1095 Aminochromes (e.g., adrenochrome, adrenolutin) Benzazepines (e.g., fenoldopam, lorcaserin, SCHEMBL5334361) Benzocyclobutenes (e.g., 2CBCB-NBOMe, S33005, TCB-2, tomscaline) Benzoxepins (e.g., BBOX, IBOX, TFMBOX) Butyltolylquinuclidine Cypenamine (trans-2-phenylcyclopentylamine) Diphenidine Diphenylprolinol DMBMPP Ergolines (e.g., LSD) GYKI-52895 HDMP-29 Ivabradine Lumateperone and analogues (e.g., IHCH-7079, IHCH-7086, IHCH-7113, ITI-1549) Methoxphenidine Methylmorphenate Milnacipran MT-45 2-Naphthylamine Org 6582 Partial ergolines (e.g., NDTDI, RU-27849, DEIMDHPCA, DEMPDHPCA, DEMPDHPCA-2C-D, RU-27251) PF-592,379 Phenylcyclopropylamines (e.g., DMCPA, TMT, tranylcypromine) Tetrahydrobenzopyranylamines (e.g., CT-5126) Tricyclics (e.g., benzoctamine, dizocilpine) Z3517967757 ZC-B

Related compounds

2-Furylethylamine
2-Pyrrolylethylamine
3-Pyrrolylethylamine
3-Pyrrolylpropylamine
2-Tetrahydrofurylethylamine
4-Benzylpiperidine
7-AB
Alkylamines (e.g., 1,3-DMBATooltip 1,3-dimethylbutylamine, 1,4-DMAATooltip 1,4-dimethylamylamine, heptaminol, iproheptine, isometheptene, methylhexanamine/1,3-DMAA, octodrine, oenethyl, tuaminoheptane)
Benzylamines (e.g., benzylamine, α-methylbenzylamine, MDM1EA, ALPHA, M-ALPHA, pargyline)
Benzylpiperazines (e.g., benzylpiperazine, MDBZP, fipexide)
Cyclohexylaminopropanes (e.g., propylhexedrine, norpropylhexedrine)
Cyclopentylaminopropanes (e.g., isocyclamine, cyclopentamine)
Phenoxyethylamines (e.g., 3,4,5-trimethoxyphenoxyethylamine, CT-4719, ORG-37684)
Phenylalkenylamines (e.g., phenylbutenamine)
Phenylalkynylamines (e.g., phenylbutynamine)
Phenylpiperazines (e.g., 1-phenylpiperazine, mCPPTooltip meta-chlorophenylpiperazine, TFMPPTooltip trifluoromethylphenylpiperazine, oMPPTooltip ortho-methylphenylpiperazine, pFPPTooltip para-fluorophenylpiperazine, pMeOPPTooltip para-methoxyphenylpiperazine)
Phenylpropylamines (e.g., phenylpropylamine, homo-MDA, homo-MDMA)
Thienylaminopropanes (thiopropamines) (e.g., thiopropamine, methiopropamine, thiothinone)

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References

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