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					Experimental psychiatric drug
Pharmaceutical compound
SNG-12, also known as Synapsinae, is a glycine transporter 1 (GlyT1) inhibitor, or a glycine reuptake inhibitor, which is under development for the treatment of psychotic disorders, dementia, depressive disorders, and suicidal ideation.[1][2][3] As of September 2022, it is in phase 3 clinical trials for depressive disorders and suicidal ideation and is in phase 2 clinical rials for psychotic disorders and dementia.[1][2][3] The drug is under development by SyneuRx.[1][2] It is described as a small molecule, but its chemical structure does not appear to have been disclosed.[1][2][4]
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| Receptor (ligands)
 | | GlyRTooltip Glycine receptor | 
Positive modulators: Alcohols (e.g., brometone, chlorobutanol (chloretone), ethanol (alcohol), tert-butanol (2M2P), tribromoethanol, trichloroethanol, trifluoroethanol)Alkylbenzene sulfonateAnandamideBarbiturates (e.g., pentobarbital, sodium thiopental)ChlormethiazoleD12-116Dihydropyridines (e.g., nicardipine)EtomidateGinseng constituents (e.g., ginsenosides (e.g., ginsenoside-Rf))Glutamic acid (glutamate)IvermectinKetamineNeuroactive steroids (e.g., alfaxolone, pregnenolone (eltanolone), pregnenolone acetate, minaxolone, ORG-20599)Nitrous oxidePenicillin GPropofolTamoxifenTetrahydrocannabinolTriclofosTropeines (e.g., atropine, bemesetron, cocaine, LY-278584, tropisetron, zatosetron)Volatiles/gases (e.g., chloral hydrate, chloroform, desflurane, diethyl ether (ether), enflurane, halothane, isoflurane, methoxyflurane, sevoflurane, toluene, trichloroethane (methyl chloroform), trichloroethylene)XenonZinc
 Antagonists: 2-Aminostrychnine2-Nitrostrychnine4-Phenyl-4-formyl-N-methylpiperidineαEMBTLBicucullineBrucineCacothelineCaffeineColchicineColubrineCyanotriphenylborateDendrobineDiabolineEndocannabinoids (e.g., 2-AG, anandamide (AEA))Gaboxadol (THIP)Gelsemineiso-THAZIsobutyric acidIsonipecotic acidIsostrychnineLaudanosineN-MethylbicucullineN-MethylstrychnineN,N-DimethylmuscimolNipecotic acidPitrazepinPseudostrychnineQuinolines (e.g., 4-hydroxyquinoline, 4-hydroxyquinoline-3-carboxylic acid, 5,7-CIQA, 7-CIQ, 7-TFQ, 7-TFQA)RU-5135SinomenineStrychnineTHAZThiocolchicosideTutin
 Negative modulators: AmilorideBenzodiazepines (e.g., bromazepam, clonazepam, diazepam, flunitrazepam, flurazepam)CorymineCyanotriphenylborateDaidzeinDihydropyridines (e.g., nicardipine, nifedipine, nitrendipine)FurosemideGenisteinGinkgo constituents (e.g., bilobalide, ginkgolides (e.g., ginkgolide A, ginkgolide B, ginkgolide C, ginkgolide J, ginkgolide M))ImipramineNBQXNeuroactive steroids (e.g., 3α-androsterone sulfate, 3β-androsterone sulfate, deoxycorticosterone, DHEA sulfate, pregnenolone sulfate, progesterone)Opioids (e.g., codeine, dextromethorphan, dextrorphan, levomethadone, levorphanol, morphine, oripavine, pethidine, thebaine)Picrotoxin (i.e., picrotin and picrotoxinin)PMBARiluzoleTropeines (e.g., bemesetron, LY-278584, tropisetron, zatosetron)VerapamilZinc
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 | NMDARTooltip N-Methyl-D-aspartate receptor |  | 
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| Transporter (blockers)
 | | GlyT1Tooltip Glycine transporter 1 |  | 
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 | GlyT2Tooltip Glycine transporter 2 |  | 
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