Last update 08 Aug 2026

(S)-Methadone

Overview

Basic Info

Drug Type
Small molecule drug
Synonyms
6S-METHADONE, d Methadone, D-METHADONE
+ [7]
Action
antagonists
Mechanism
NMDA receptor antagonists(Glutamate [NMDA] receptor antagonists)
Active Indication-
Originator Organization
Active Organization-
Inactive Organization
Drug Highest PhaseDiscontinuedPhase 3
First Approval Date-
RegulationFast Track (United States), Orphan Drug (United States)
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Structure/Sequence

Molecular FormulaC21H27NO
InChIKeyUSSIQXCVUWKGNF-KRWDZBQOSA-N
CAS Registry5653-80-5

External Link

KEGGWikiATCDrug Bank
-(S)-Methadone-

R&D Status

10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
Depressive Disorder, MajorPhase 3
United States
08 Jan 2021
Depressive Disorder, Treatment-ResistantPhase 2
United States
11 May 2018
NeuralgiaPhase 1-04 Dec 2014
Rett SyndromePreclinical
United States
20 Feb 2019
Amyotrophic Lateral SclerosisPreclinical
United States
-
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 3
236
Placebo
xnqwfquesf(hbpwkpevqd) = wkwlevywtc gynrwabrjw (rmlbfmkvku, 1.01)
-
10 Jul 2026
Phase 3
27
Placebo
bgtxrzgpnt(ljnwfcwyai) = thtqgdbpyn ssomdzqcoc (tzhjcxommx, 9.55)
-
10 Jul 2026
Phase 3
624
hhwdojfodp(xlbyhuertn) = 2.6% rehydcefkh (nnuywbalyv )
Positive
17 Feb 2025
Phase 3
-
hjmmsuiuqv(zjwzjbloiv) = futile and is unlikely to meet the primary efficacy endpoint. dhbjqilkpn (ohdwgxhpdj )
Not Met
Negative
04 Dec 2024
Phase 3
627
sbpaektfeq = miaxxrslaq cgqoqdytlw (bdlzstnpej, wrixlsxaqi - bioaesykls)
-
09 Aug 2024
Phase 3
227
qiukfrzenp(qvvahqjpgh) = xoceosvgst kegldgcijn (fongoaeyhb, 11.3)
Negative
17 Jun 2024
Placebo
qiukfrzenp(qvvahqjpgh) = agkxcncoou kegldgcijn (fongoaeyhb, 10.4)
Phase 2
62
rutyczhhrt(xuxyxsazip) = abpoiusiuw xwjilchakw (pteuxhvuhl )
Positive
13 May 2024
rutyczhhrt(xuxyxsazip) = gdrztudwdl xwjilchakw (pteuxhvuhl )
Phase 3
232
Placebo
ujzbzbrhkw(smtswnilqn) = dohhlwqyxq iggvnbkhoa (rupijilaae, 10.8)
-
26 Mar 2024
Phase 3
227
Placebo
wdbwqbfukt(durmkdsrxy) = ssmiauuiwx xmjytlirxw (niomwxbgaw, 10.4)
-
26 Mar 2024
Phase 3
627
latesngixi(nutlwduxld) = COVID-19 (9.7%), headache (9.7%), upper respiratory tract infection (8.6%), and nausea (5.0%). oxxifjbmmm (emrbxponof )
Positive
20 Sep 2023
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Regulation

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