Nafamostat

Nafamostat

SCHEMBL135504

N=C(N)c1ccc2cc(OC(=O)c3ccc(N=C(N)N)cc3)ccc2c1

nearest known ligand 1.00 ✓ in ChEMBL — recovers established targets

Full drug profile on Sugi Atlas →

Predicted protein targets (top 20)

geneUniProtsupporting neighboursconfidence
PRSS1 P07477 13/20 1.00
F2 P00734 5/20 1.00
HGFAC Q04756 4/20 1.00
ALDH1A1 P00352 2/20 1.00
PLG P00747 2/20 1.00
TMPRSS2 O15393 1/20 1.00
MLNR O43193 1/20 1.00
C1R P00736 1/20 1.00
F10 P00742 1/20 1.00
F12 P00748 1/20 1.00
LMNA P02545 1/20 1.00
ITGB3 P05106 1/20 1.00
HPN P05981 1/20 1.00
KLK1 P06870 1/20 1.00
CHRM2 P08172 1/20 1.00
ITGA2B P08514 1/20 1.00
C1S P09871 1/20 1.00
ADORA3 P0DMS8 1/20 1.00
MAPT P10636 1/20 1.00
CHRM1 P11229 1/20 1.00

Click a target to see other patent compounds predicted against it — the reverse direction, in place.

Similar compounds — the chemically nearest patent molecules

Nearest neighbours by Morgan-fingerprint cosine across the patent-compound collection, with each neighbour's top predicted target and the predicted targets it shares with this molecule.

Compoundsimilaritytop predictedshared targets
Nafamostat SCHEMBL29358879 1.00 PRSS1 (1.00) PRSS1F2HGFACALDH1A1PLG
Nafamostat SCHEMBL29360143 1.00 PRSS1 (1.00) PRSS1F2HGFACALDH1A1PLG
Nafamostat SCHEMBL25197320 0.93 FTO (1.00) PRSS1F2HGFACALDH1A1PLG
Nafamostat SCHEMBL1650158 0.93 FTO (1.00) PRSS1F2HGFACALDH1A1PLG
SCHEMBL31380450 0.87 F12 (0.76) PRSS1F2HGFACALDH1A1PLG
SCHEMBL23898923 0.86 PRSS1 (0.76) PRSS1F2HGFACALDH1A1PLG
SCHEMBL25633204 0.86 PRSS1 (0.76) PRSS1F2HGFACALDH1A1PLG
SCHEMBL7337750 0.83 F12 (0.71) PRSS1F2HGFACALDH1A1PLG
SCHEMBL7338848 0.83 F12 (0.71) PRSS1F2HGFACALDH1A1PLG
SCHEMBL7342376 0.83 F12 (0.71) PRSS1F2HGFACALDH1A1PLG

Similarity is cosine over the 2,048-bit Morgan fingerprint (≈ Tanimoto). Identical fingerprints score 1.00.

Patent provenance — the patents this molecule appears in, and who filed them

Appears in 3828 patents — a generic fragment claimed broadly, so it's down-weighted as IP noise. Top by claim status then date:

PatentTitleAssigneePublishedPriorityFilingCountryStatus
EP-4228644-B1 N-[4-[1-(1,4-DIOXASPIRO[4.5]DEC-8-YL)-4-(8-OXA-3-AZABICYCLO[3.2.1]OCT-3-YL)-1H-PYRAZOLO[3,4-D]PYRIMIDIN-6-YL]PHENYL]-N'-METHYLUREA FOR USE IN THE TREATMENT OF COVID19 NANTCELL INC (US) 2026-05-27 EP claimed
US-12636253-B2 Modified release compositions of nafamostat and methods of using same Ensysce Biosciences Inc. (US) 2026-05-26 US claimed
US-20260139035-A1 HUMAN ANTIBODY AGAINST CORONAVIRUS VARIANTS OR ANTIGEN-BINDING FRAGMENT THEREOF NATIONAL UNIVERSITY CORPORATION KUMAMOTO UNIVERSITY (JP) 2026-05-21 US claimed
EP-3934635-B1 COMPOSITIONS COMPRISING ENZYME-CLEAVABLE AMPHETAMINE PRODRUGS AND INHIBITORS THEREOF ENSYSCE BIOSCIENCES INC (US) 2026-05-20 EP claimed
US-20260130921-A1 TREATMENT OF VIRAL INFECTIONS WITH COMBINATION OF PIKFYVE KINASE INHIBITORS AND TMPRSS-2 INHIBITORS AcuraStem Incorporated (US) 2026-05-14 US claimed
EP-4725496-A2 N-[4-[1-(1,4-DIOXASPIRO[4.5]DEC-8-YL)-4-(8-OXA-3-AZABICYCLO[3.2.1]OCT-3-YL)-1H-PYRAZOLO[3,4-D]PYRIMIDIN-6-YL]PHENYL]-N'-METHYLUREA FOR USE IN THE TREATMENT OF COVID19 NantCell, Inc. (US) 2026-04-15 EP claimed
US-12599644-B2 Treatment of coronavirus infection with Flt3 receptor interacting lectin (FRIL) ACADEMIA SINICA (TW) 2026-04-14 US claimed
US-12599578-B2 Compositions comprising enzyme-cleavable prodrugs and controlled release nafamostat and methods of use thereof Ensysce Biosciences Inc. (US) 2026-04-14 US claimed
US-20260007597-A1 COMPOSITIONS AND METHODS FOR TREATMENT OF VIRUS-INDUCED AIRWAY FIBROSIS THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY, DEPT. OF HEALTH AND HUMAN SERVICES (US) 2026-01-08 US claimed
US-20250361205-A1 ENZYME-CLEAVABLE METHADONE PRODRUGS AND METHODS OF USE THEREOF ENSYSCE BIOSCIENCES INC (US) 2025-11-27 US claimed
US-20030077229-A1 Buccal, polar and non-polar spray or capsule containing cardiovascular or renal drugs NOVADEL PHARMA INC. 2003-04-24 US claimed
EP-0801953-B1 Medical device for the extracorporal blood or plasma treatment and methods for the manufacture of such device HOSPAL IND (FR) 2002-07-03 EP claimed
EP-1073470-A1 PHARMACEUTICAL COMPOSITIONS CONTAINING COMPOUNDS WITH ACTIVITY FOR THE ENHANCEMENT OF ABSORPTION OF ACTIVE INGREDIENTS INPHARMA S.A. (CH) 2001-02-07 EP claimed
WO-2000048636-A1 PHARMACEUTICAL COMPOSITIONS CONTAINING COMPOUNDS WITH ACTIVITY FOR THE ENHANCEMENT OF ABSORPTION OF ACTIVE INGREDIENTS INPHARMA S.A. (CH) 2000-08-24 WO claimed
US-5811547-A Method for inducing crystalline state transition in medicinal substance NIPPON SHINYAJU CO., LTD. (JP) 1998-09-22 US claimed
US-5709993-A Process for anticoagulation during extracorporeal blood circulation sequentially using citrate or nafamostat and heparin BUTUROVIC-PONIKVAR JADRANKA (SI) 1998-01-20 US claimed
EP-0801953-A1 Medical device for the extracorporal blood or plasma treatment and methods for the manufacture of such device HOSPAL INDUSTRIE (FR) 1997-10-22 EP claimed
EP-0647398-B1 ORGAN PRESERVING FLUID TORII PHARMACEUTICAL CO LTD (JP) 1997-09-17 EP claimed
US-5565317-A BIOLOGICAL ORGAN PRESERVATIVE; STORAGE STABILITY TORII PHARMACEUTICAL CO., LTD. (JP) 1996-10-15 US claimed
EP-0647398-A1 ORGAN PRESERVING FLUID TORII PHARMACEUTICAL CO., LTD (JP) 1995-04-12 EP claimed