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Target Snapshot

CHEMBL233 Target Snapshot

Mu-type opioid receptor · SINGLE PROTEIN · Homo sapiens

13,324Compounds
2,047Assays
130Approved Drugs
16,026.0Activities
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Broader Open DB context

Frame the target before identity details

Structured disease, protein, and project context should read before the lower-level identity rail.

As of 2026-09-13

Mu-type opioid receptor shows approved-linked disease relevance led by pain. 5 more disease programs remain visible in the same review block. 21 linked drugs keep the current disease frame grounded. Protein identity stays anchored to UniProt P35372. Start with pain, then reuse UniProt P35372 as the stable protein anchor across project notes and exports.

Review focus
Review-ready target frame

Start with pain, then reuse UniProt P35372 as the stable protein anchor across project notes and exports.

ChEMBL component mapping + Open Targets-ready proxy + ChEMBL 36 via Core Engine 2026-09-13 21 linked drugs
Open source guide
Disease program
pain

Mu-type opioid receptor shows approved-linked disease relevance led by pain. 5 more disease programs remain visible in the same review block. 21 linked drugs remain visible in the same block.

Start review with pain because it currently carries approved-linked support. Linked drugs include AXOMADOL, BUPRENORPHINE, DEZOCINE, DIHYDROCODEINE BITARTRATE. This disease block keeps the Open Targets-ready contract explicit while current evidence comes from ChEMBL mechanism and indication mappings.

Disease source · ChEMBL drug mechanism + indication proxy
Approved-linked Open Targets-ready proxy 21 linked drugs
Open disease block
Identity Layer

Cross-source identity

Keep the review anchor, source IDs, and context contract aligned before reusing this target elsewhere.

This review treats Mu-type opioid receptor as ChEMBL target CHEMBL233, mapped to UniProt P35372. Disease framing currently uses the Open Targets-ready proxy contract.

Review anchor
Mu-type opioid receptor
SINGLE PROTEIN · Homo sapiens
As of 2026-09-13
ChEMBL target ID
CHEMBL233
Primary anchor for compounds, assays, approvals, and exports
ChEMBL 36 via Core Engine As of 2026-09-13
www.ebi.ac.uk
UniProt accession
P35372
Mu-type opioid receptor
UniProt accession via ChEMBL component mapping As of 2026-09-13
www.uniprot.org
Disease evidence contract
Open Targets-ready proxy
ChEMBL drug mechanism + indication proxy
ChEMBL drug mechanism + indication proxy As of 2026-09-13
www.ebi.ac.uk

Reuse the same identifiers in notes, watch rules, exports, and review packs so provenance stays stable across surfaces.

Source Guidance

Start with the right source

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UniProt Target Context
UniProt accession via ChEMBL component mapping

Start here when your first question is whether Mu-type opioid receptor is the right protein anchor across sources, using UniProt P35372 as the stable mapping.

Jump to Protein Context
Need disease fit before discussing compounds?
Disease Relevance & Evidence Level
ChEMBL drug mechanism + indication proxy

Use this block first when you need to confirm why pain is currently framed as approved-linked support. It currently carries 21 linked drugs in the same disease frame.

Jump to Disease Context
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Evidence Card
Review-ready rationale with source-aware context

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Open Review-ready Card
Overview

Basic Information

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UniProt Context

UniProt Target Context

Reviewable protein naming and mapping context for this target snapshot.

Protein LabelMu-type opioid receptor
UniProt AccessionP35372
Component TypeProtein
Sequence Length400 aa

Mu-type opioid receptor

Source · UniProt accession via ChEMBL component mapping
Review Cue

How to read this target

Review this target as Mu-type opioid receptor, mapped to UniProt P35372. Sequence length is 400 aa.

Mapped IDP35372
Review nameMu-type opioid receptor
OrganismHomo sapiens
Disease Relevance

Disease Relevance & Evidence Level

Open Targets-ready disease context using the current target-indication evidence contract.

Approved-linked Open Targets-ready proxy

Mu-type opioid receptor shows approved-linked disease relevance led by pain. 5 more disease programs remain visible in the same review block.

Approved-linked Approved
pain
21 linked drugs · 21 direct · 21 efficacy
Linked drugAXOMADOL
Linked drugBUPRENORPHINE
Linked drugDEZOCINE
Linked drugDIHYDROCODEINE BITARTRATE
Approved-linked Approved
Chronic pain
12 linked drugs · 12 direct · 12 efficacy
Linked drugAXOMADOL
Linked drugBUPRENORPHINE
Linked drugFAXELADOL
Linked drugFENTANYL
Approved-linked Approved
drug dependence
11 linked drugs · 11 direct · 11 efficacy
Linked drugBUPRENORPHINE
Linked drugBUPRENORPHINE HYDROCHLORIDE
Linked drugBUTORPHANOL TARTRATE
Linked drugHYDROMORPHONE HYDROCHLORIDE
Approved-linked Approved
pain
11 linked drugs · 11 direct · 11 efficacy
Linked drugBUPRENORPHINE
Linked drugFENTANYL
Linked drugHYDROMORPHONE HYDROCHLORIDE
Linked drugMEPERIDINE HYDROCHLORIDE
Approved-linked Approved
opioid dependence
10 linked drugs · 10 direct · 10 efficacy
Linked drugBUPRENORPHINE
Linked drugBUPRENORPHINE HYDROCHLORIDE
Linked drugDIACETYLMORPHINE
Linked drugFENTANYL
Approved-linked Approved
Constipation
8 linked drugs · 8 direct · 8 efficacy
Linked drugALVIMOPAN
Linked drugAXELOPRAN
Linked drugBEVENOPRAN
Linked drugMETHYLNALTREXONE BROMIDE
Source · ChEMBL drug mechanism + indication proxy
Review Cue

How to read disease relevance

Start review with pain because it currently carries approved-linked support. Linked drugs include AXOMADOL, BUPRENORPHINE, DEZOCINE, DIHYDROCODEINE BITARTRATE. This disease block keeps the Open Targets-ready contract explicit while current evidence comes from ChEMBL mechanism and indication mappings.

Lead diseasepain
Strongest levelApproved-linked
Block modeOpen Targets-ready proxy
Clinical Profile

Clinical Phase Distribution

130
Approved
11
Phase III
37
Phase II
6
Phase I
Assay Mix

Activity Type Distribution

IC503,534.0
KI8,725.0
EC503,725.0
KD42.0
Lead Set

Top Inhibitors (by pChEMBL)

ChEMBL IDpChEMBLTypeValue (nM)Phase
CHEMBL199832 11.0 Ki 0.01 Preclinical
CHEMBL326684 11.0 Ki 0.01 Preclinical
CHEMBL58362 11.0 Ki 0.01 Preclinical
CHEMBL5175179 10.96 Ki 0.011 Preclinical
CHEMBL4550234 10.96 Ki 0.0109 Preclinical
CHEMBL4450250 10.96 Ki 0.0109 Preclinical
CHEMBL4521879 10.96 Ki 0.0109 Preclinical
CHEMBL4439415 10.96 Ki 0.0109 Preclinical
CHEMBL443311 10.9 IC50 0.0125 Preclinical
CHEMBL331883 10.89 Ki 0.013 Preclinical
Distribution

pChEMBL Value Distribution

720
5.0
994
5.5
1315
6.0
1343
6.5
1409
7.0
1224
7.5
1279
8.0
1041
8.5
644
9.0
440
9.5
pChEMBL
Approved Drugs

Approved Drugs

SAMIDORPHAN
CHEMBL426084
Approved 2021
OLICERIDINE
CHEMBL2443262
Approved 2020
CANNABIDIOL
CHEMBL190461
Approved 2018
NALDEMEDINE
CHEMBL2105755
Approved 2017
ELUXADOLINE
CHEMBL2159122
Approved 2015
VILAZODONE HYDROCHLORIDE
CHEMBL1615374
Approved 2011
NALFURAFINE HYDROCHLORIDE
CHEMBL490665
Approved 2009
TOLVAPTAN
CHEMBL344159
Approved 2009
NALFURAFINE
CHEMBL267495
Approved 2009
ALVIMOPAN
CHEMBL270190
Approved 2008
TAPENTADOL
CHEMBL1201776
Approved 2008
METHYLNALTREXONE BROMIDE
CHEMBL1201770
Approved 2008
METHYLNALTREXONE
CHEMBL1186579
Approved 2008
FROVATRIPTAN SUCCINATE
CHEMBL2138684
Approved 2001
MIFEPRISTONE
CHEMBL1276308
Approved 2000
RALOXIFENE
CHEMBL81
Approved 1997
NALMEFENE
CHEMBL982
Approved 1995
LEVORPHANOL
CHEMBL592
Approved 1991
DEZOCINE
CHEMBL1685
Approved 1989
ASTEMIZOLE
CHEMBL296419
Approved 1988
ALFENTANIL HYDROCHLORIDE
CHEMBL1200531
Approved 1986
PIMOZIDE
CHEMBL1423
Approved 1984
MORPHINE
CHEMBL70
Approved 1984
HYDROMORPHONE
CHEMBL398707
Approved 1984
SUFENTANIL
CHEMBL658
Approved 1984
NALTREXONE
CHEMBL19019
Approved 1984
LEVALLORPHAN
CHEMBL1254682
Approved 1982
GENTIAN VIOLET
CHEMBL64894
Approved 1982
BUPRENORPHINE HYDROCHLORIDE
CHEMBL2368861
Approved 1981
BUPRENORPHINE
CHEMBL511142
Approved 1981
NALBUPHINE
CHEMBL895
Approved 1979
BUTORPHANOL
CHEMBL33986
Approved 1978
LOPERAMIDE
CHEMBL841
Approved 1976
LOPERAMIDE HYDROCHLORIDE
CHEMBL1707
Approved 1976
CLOTRIMAZOLE
CHEMBL104
Approved 1975
NALOXONE
CHEMBL80
Approved 1971
FENTANYL
CHEMBL596
Approved 1968
HALOPERIDOL
CHEMBL54
Approved 1967
PENTAZOCINE
CHEMBL100116
Approved 1967
DIPHENOXYLATE
CHEMBL1201294
Approved 1960
OXYMORPHONE
CHEMBL963
Approved 1959
CODEINE
CHEMBL485
Approved 1952
OXYCODONE
CHEMBL656
Approved 1950
METHADONE
CHEMBL651
Approved 1947
DIHYDROERGOTAMINE MESYLATE
CHEMBL1200517
Approved 1946
HYDROCODONE
CHEMBL1457
Approved 1943
MEPERIDINE
CHEMBL607
Approved 1942
MEPERIDINE HYDROCHLORIDE
CHEMBL1701
Approved 1942
Source · ChEMBL 36 via Core Engine