GBLD-345

GBLD-345 is an anxiolytic drug used in scientific research, which acts as a non-selective, full-efficacy positive allosteric modulator of the GABA_A receptor. It has similar effects to benzodiazepine drugs, but is structurally distinct and so is classed as a nonbenzodiazepine anxiolytic.[1]

GBLD-345
Identifiers

IUPAC name 2-(4-aminophenyl)-3-methoxy-N-[(3-methoxyphenyl)methyl] imidazo[2,1-f]pyridazin-6-amine
CAS Number	122479-08-7
PubChem CID	4602899
ChemSpider	3794457
ChEMBL	ChEMBL1339029
Chemical and physical data
Formula	C₂₁H₂₁N₅O₂
Molar mass	375.432 g·mol⁻¹
3D model (JSmol)	Interactive image
SMILES COC1=CC=CC(CNC(C=C2)=NN3C2=NC(C4=CC=C(N)C=C4)=C3OC)=C1
InChI InChI=1S/C21H21N5O2/c1-27-17-5-3-4-14(12-17)13-23-18-10-11-19-24-20(21(28-2)26(19)25-18)15-6-8-16(22)9-7-15/h3-12H,13,22H2,1-2H3,(H,23,25) Key:HQRHGSRWOHGIRI-UHFFFAOYSA-N
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References

Davies LP, Barlin GB, Ireland SJ, Ngu MM (October 1992). "Substituted imidazo[1,2-b]pyridazines. New compounds with activity at central and peripheral benzodiazepine receptors". Biochemical Pharmacology. 44 (8): 1555–61. doi:10.1016/0006-2952(92)90472-U. PMID 1358075.

Anxiolytics (N05B)
5-HT_1AR agonists	Buspirone Gepirone^† Tandospirone
GABA_AR PAMs	Benzodiazepines: Adinazolam Alprazolam Bromazepam Camazepam Chlordiazepoxide Clobazam Clonazepam Clorazepate Clotiazepam Cloxazolam Diazepam^# Ethyl loflazepate Etizolam Fludiazepam Halazepam Ketazolam Lorazepam^# Medazepam Nordazepam Oxazepam Pinazepam Prazepam; Others: Alpidem^‡ Barbiturates (e.g., phenobarbital) Carisoprodol Carbamates (e.g., meprobamate) Chlormezanone^‡ Ethanol (alcohol) Etifoxine Imepitoin; Herbs: Kava Skullcap Valerian
Gabapentinoids (α₂δ VDCC blockers)	Gabapentin Gabapentin enacarbil Phenibut Pregabalin
Antidepressants	SSRIs (e.g., escitalopram) SNRIs (e.g., duloxetine) SARIs (e.g., trazodone) TCAs (e.g., clomipramine^#) TeCAs (e.g., mirtazapine) MAOIs (e.g., phenelzine); Others: Agomelatine Bupropion Tianeptine Vilazodone Vortioxetine
Sympatholytics (Antiadrenergics)	Alpha-1 blockers (e.g., prazosin) Alpha-2 agonists (e.g., clonidine, dexmedetomidine, guanfacine) Beta blockers (e.g., propranolol)
Others	Benzoctamine Cannabidiol Cycloserine Fabomotizole Hydroxyzine Kanna Lavender Lorpiprazole Mebicar Mepiprazole Nicotine Opipramol Oxaflozane^‡ Phenaglycodol Phenibut Picamilon Selank Tiagabine Tofisopam Validolum
^#WHO-EM ^‡Withdrawn from market Clinical trials: ^†Phase III ^§Never to phase III

GABA_A receptor positive modulators
Alcohols	Brometone Butanol Chloralodol Chlorobutanol (cloretone) Ethanol (alcohol) (alcoholic drink) Ethchlorvynol Isobutanol Isopropanol Menthol Methanol Methylpentynol Pentanol Petrichloral Propanol tert-Butanol (2M2P) tert-Pentanol (2M2B) Tribromoethanol Trichloroethanol Triclofos Trifluoroethanol
Barbiturates	(-)-DMBB Allobarbital Alphenal Amobarbital Aprobarbital Barbexaclone Barbital Benzobarbital Benzylbutylbarbiturate Brallobarbital Brophebarbital Butabarbital/Secbutabarbital Butalbital Buthalital Butobarbital Butallylonal Carbubarb Crotylbarbital Cyclobarbital Cyclopentobarbital Difebarbamate Enallylpropymal Ethallobarbital Eterobarb Febarbamate Heptabarb Heptobarbital Hexethal Hexobarbital Metharbital Methitural Methohexital Methylphenobarbital Narcobarbital Nealbarbital Pentobarbital Phenallymal Phenobarbital Phetharbital Primidone Probarbital Propallylonal Propylbarbital Proxibarbital Reposal Secobarbital Sigmodal Spirobarbital Talbutal Tetrabamate Tetrabarbital Thialbarbital Thiamylal Thiobarbital Thiobutabarbital Thiopental Thiotetrabarbital Valofane Vinbarbital Vinylbital
Benzodiazepines	2-Oxoquazepam 3-Hydroxyphenazepam Adinazolam Alprazolam Arfendazam Avizafone Bentazepam Bretazenil Bromazepam Brotizolam Camazepam Carburazepam Chlordiazepoxide Ciclotizolam Cinazepam Cinolazepam Clazolam Climazolam Clobazam Clonazepam Clonazolam Cloniprazepam Clorazepate Clotiazepam Cloxazolam CP-1414S Cyprazepam Delorazepam Demoxepam Diazepam Diclazepam Doxefazepam Elfazepam Estazolam Ethyl carfluzepate Ethyl dirazepate Ethyl loflazepate Etizolam EVT-201 FG-8205 Fletazepam Flubromazepam Flubromazolam Fludiazepam Flunitrazepam Flunitrazolam Flurazepam Flutazolam Flutemazepam Flutoprazepam Fosazepam Gidazepam Halazepam Haloxazolam Iclazepam Imidazenil Irazepine Ketazolam Lofendazam Lopirazepam Loprazolam Lorazepam Lormetazepam Meclonazepam Medazepam Menitrazepam Metaclazepam Mexazolam Midazolam Motrazepam N-Desalkylflurazepam Nifoxipam Nimetazepam Nitrazepam Nitrazepate Nitrazolam Nordazepam Nortetrazepam Oxazepam Oxazolam Phenazepam Pinazepam Pivoxazepam Prazepam Premazepam Proflazepam Pyrazolam QH-II-66 Quazepam Reclazepam Remimazolam Rilmazafone Ripazepam Ro48-6791 Ro48-8684 SH-053-R-CH3-2′F Sulazepam Temazepam Tetrazepam Tolufazepam Triazolam Triflubazam Triflunordazepam (Ro5-2904) Tuclazepam Uldazepam Zapizolam Zolazepam Zomebazam
Carbamates	Carisbamate Carisoprodol Clocental Cyclarbamate Difebarbamate Emylcamate Ethinamate Febarbamate Felbamate Hexapropymate Lorbamate Mebutamate Meprobamate Nisobamate Pentabamate Phenprobamate Procymate Styramate Tetrabamate Tybamate
Flavonoids	6-Methylapigenin Ampelopsin (dihydromyricetin) Apigenin Baicalein Baicalin Catechin EGC EGCG Hispidulin Linarin Luteolin Rc-OMe Skullcap constituents (e.g., baicalin) Wogonin
Imidazoles	Etomidate Metomidate Propoxate
Kava constituents	10-Methoxyyangonin 11-Methoxyyangonin 11-Hydroxyyangonin Desmethoxyyangonin 11-Methoxy-12-hydroxydehydrokavain 7,8-Dihydroyangonin Kavain 5-Hydroxykavain 5,6-Dihydroyangonin 7,8-Dihydrokavain 5,6,7,8-Tetrahydroyangonin 5,6-Dehydromethysticin Methysticin 7,8-Dihydromethysticin Yangonin
Monoureides	Acecarbromal Apronal (apronalide) Bromisoval Carbromal Capuride Ectylurea
Neuroactive steroids	Acebrochol Allopregnanolone (brexanolone) Alfadolone Alfaxalone 3α-Androstanediol Androstenol Androsterone Certain anabolic-androgenic steroids Cholesterol DHDOC 3α-DHP 5α-DHP 5β-DHP DHT Etiocholanolone Ganaxolone Hydroxydione Minaxolone ORG-20599 ORG-21465 P1-185 Pregnanolone (eltanolone) Progesterone Renanolone SAGE-105 SAGE-324 SAGE-516 SAGE-689 SAGE-872 Testosterone THDOC Zuranolone
Nonbenzodiazepines	Cyclopyrrolones: Eszopiclone Pagoclone Pazinaclone Suproclone Suriclone Zopiclone Imidazopyridines: Alpidem DS-1 Necopidem Saripidem Zolpidem Pyrazolopyrimidines: Divaplon Fasiplon Indiplon Lorediplon Ocinaplon Panadiplon Taniplon Zaleplon Others: Adipiplon CGS-8216 CGS-9896 CGS-13767 CGS-20625 CL-218,872 CP-615,003 CTP-354 ELB-139 GBLD-345 Imepitoin JM-1232 L-838,417 Lirequinil (Ro41-3696) NS-2664 NS-2710 NS-11394 Pipequaline ROD-188 RWJ-51204 SB-205,384 SX-3228 TGSC01AA TP-003 TPA-023 TP-13 U-89843A U-90042 Viqualine Y-23684
Phenols	Fospropofol Propofol Thymol
Piperidinediones	Glutethimide Methyprylon Piperidione Pyrithyldione
Pyrazolopyridines	Cartazolate Etazolate ICI-190,622 Tracazolate
Quinazolinones	Afloqualone Cloroqualone Diproqualone Etaqualone Mebroqualone Mecloqualone Methaqualone Methylmethaqualone Nitromethaqualone SL-164
Volatiles/gases	Acetone Acetophenone Acetylglycinamide chloral hydrate Aliflurane Benzene Butane Butylene Centalun Chloral Chloral betaine Chloral hydrate Chloroform Cryofluorane Desflurane Dichloralphenazone Dichloromethane Diethyl ether Enflurane Ethyl chloride Ethylene Fluroxene Gasoline Halopropane Halothane Isoflurane Kerosine Methoxyflurane Methoxypropane Nitric oxide Nitrogen Nitrous oxide Norflurane Paraldehyde Propane Propylene Roflurane Sevoflurane Synthane Teflurane Toluene Trichloroethane (methyl chloroform) Trichloroethylene Vinyl ether
Others/unsorted	3-Hydroxybutanal α-EMTBL AA-29504 Avermectins (e.g., ivermectin) Bromide compounds (e.g., lithium bromide, potassium bromide, sodium bromide) Carbamazepine Chloralose Chlormezanone Clomethiazole DEABL Dihydroergolines (e.g., dihydroergocryptine, dihydroergosine, dihydroergotamine, ergoloid (dihydroergotoxine)) DS2 Efavirenz Etazepine Etifoxine Fenamates (e.g., flufenamic acid, mefenamic acid, niflumic acid, tolfenamic acid) Fluoxetine Flupirtine Hopantenic acid Lanthanum Lavender oil Lignans (e.g., 4-O-methylhonokiol, honokiol, magnolol, obovatol) Loreclezole Menthyl isovalerate (validolum) Monastrol Niacin Nicotinamide (niacinamide) Org 25,435 Phenytoin Propanidid Retigabine (ezogabine) Safranal Seproxetine Stiripentol Sulfonylalkanes (e.g., sulfonmethane (sulfonal), tetronal, trional) Terpenoids (e.g., borneol) Topiramate Valerian constituents (e.g., isovaleric acid, isovaleramide, valerenic acid, valerenol) Unsorted benzodiazepine site positive modulators: α-Pinene MRK-409 (MK-0343) TCS-1105 TCS-1205
See also: Receptor/signaling modulators • GABA receptor modulators • GABA metabolism/transport modulators

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