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Covalent Inhibitor Library

Catalog No. L9410
  Library Compound List   Excel SDF

Covalent inhibitors are small organic molecules which interact with specific target proteins and form a covalent bond, resulting an alteration of the protein conformation and subsequently inhibit the protein activity. With some exceptions, protein modification by covalent inhibitors is usually irreversible.

Covalent inhibitors possess significant advantages over non-covalent inhibitors, such that covalent warheads can target rare residues of a particular target protein, thus leading to the development of highly selective inhibitors and achieving a more complete and continued target occupancy in living systems. However, toxicity can be a real challenge related to this class of therapeutics due to their potential for off-target reactivity and has led to these drugs being disfavored as a drug class. Consequently, there has been a reluctance to apply a covalent mode of action in drug discovery programs and avoided by the pharmaceutical industry.

Although the majority of successful covalent drugs were discovered through serendipity in phenotypic screens, and their molecular mechanisms were elucidated afterwards, covalent drugs have made a major impact on human health and have been highly successful drugs for the pharmaceutical industry over the last 100 years, such as penicillin, omeprazole, clopidogrel, aspirin, fluorouracil, and third generation of irreversible EGFR tyrosine kinase inhibitor AZD9291/Osimertinib.

In recent years, the distinct strengths of covalent inhibitors in overcoming drug resistance had been recognized. It appears that irreversible inhibitors may maintain activity against drug-resistant mutations that are acquired after treatment with reversible inhibitors. Irreversible inhibition has important and potentially advantageous consequences for drug pharmacodynamics in which the level and frequency of dosing relates to the extent and duration of the resulting pharmacological effect. The unique pharmacodynamic feature of covalent inhibitors might bring certain practical advantages. The prolonged duration of drug action on the target effectively uncouples the pharmacodynamics of the drug from the pharmacokinetics of exposure, as target inhibition persists after the drug has been cleared. This property of covalent drugs enables less frequent dosing and the potential for lower drug doses. In addition, more and more studies have found that many major diseases, such as malignant tumors, are regulated by kinases, and these enzymes have also become the most attractive drug targets. Over the past decade, covalent kinase inhibitors (CKI) have seen a resurgence in drug discovery. Current FDA approved CKIs will bring the dawn to cancer chemotherapy. The drug design and optimization of covalent inhibitors has become a hot spot in drug discovery.

The irreversible covalent inhibitor molecule is divided into two parts: a seeker and a warhead. After entering the body, the seeker and the target protein binding site first form a non-covalent interaction, and then the warhead forms an irreversible covalent bond with the nucleophilic residues of target protein. Common warheads include Michael acceptors, Sulfonyl fluoride, disulfide bond, etc.

The structure and mechanism of reversible covalent inhibitors are similar to irreversible covalent inhibitors, but the difference is that the covalent binding to the target protein is reversible. The warheads for reversible covalent inhibitors are reversible nucleophilic addition reaction receptors such as cyano group and ketone carbonyl group. The reversibility of its covalent binding to the target makes its pharmacokinetics fall in between irreversible covalent inhibitors and non-covalent inhibitors. To a certain extent, reversible covalent inhibitors share the advantages of irreversible covalent inhibitors in the prolonged duration of action and the potential for lower drug doses, while reducing the risk of toxicity caused by off-target.

TargetMol collects 941 small molecules including identified covalent inhibitors and other molecules having covalent reactive groups as warheads, such as chloroacetyl,2-Chloropropionyl,Acryloyl,alkyne,sulfonyl fluoride, acrylamide, ketocarbonyl,disulfide bond, etc.

All products from TargetMol are for Research Use Only. Not for Human or Veterinary or Therapeutic Use.
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Product Description

  • A unique collection of 941 covalent Inhibitors and other molecules with common warheads like chloroacetyl,2-Chloropropionyl,Acryloyl,sulfonyl fluoride, alkyne,acrylamide, ketocarbonyl,disulfide bond, etc.
  • Structurally diverse with some covalent inhibitors approved by the FDA
  • Detailed compound information with structure, target, IC50, and biological activity description
  • NMR and HPLC/LCMS validated to ensure high purity

Library Customization

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Packaging And Storage

  • Powder or pre-dissolved DMSO solutions in 96/384 well plate with optional 2D barcode
  • Shipped with blue ice
Request Library Compound List (L9410)

Library Composition

Antibacterial (59)
Antibiotic (41)
EGFR (39)
VEGFR (22)
FGFR (15)
DNA/RNA Synthesis (15)
BTK (14)
PDGFR (12)
NF-κB (12)
Dehydrogenase (12)
AChR (12)
JAK (12)
Estrogen/progestogen Receptor (11)
Proteasome (11)
Endogenous Metabolite (11)
Antifection (11)
PI3K (11)
Raf (11)
Cysteine Protease (10)
Phosphatase (10)
Apoptosis (10)
HDAC (10)
Microtubule Associated (10)
CDK (10)
MAO (9)
HIV Protease (9)
BCL (8)
COX (8)
c-Kit (8)
Src (8)
ROS (8)
Ras (8)
Caspase (8)
P450 (8)
HER (7)
PKC (7)
GluR (7)
Histone Methyltransferase (7)
FLT (7)
HSP (7)
IκB/IKK (7)
Autophagy (7)
Glucocorticoid Receptor (6)
Potassium Channel (6)
PPAR (6)
Phospholipase (6)
Epigenetic Reader Domain (6)
STAT (6)
TRP/TRPV Channel (6)
5-HT Receptor (6)
mTOR (5)
STING (5)
Nrf2 (5)
Opioid Receptor (5)
Tyrosinase (5)
ATPase (5)
ERK (5)
Bcr-Abl (5)
TGF-beta/Smad (5)
S1P Receptor (5)
c-RET (5)
GABA Receptor (4)
Retinoid Receptor (4)
TNF (4)
Calcium Channel (4)
Histone Demethylase (4)
Mdm2 (4)
HIF (4)
Proton pump (4)
Serine Protease (4)
HCV Protease (4)
E1/E2/E3 Enzyme (4)
PDE (4)
Tyrosine Kinases (4)
DNA Methyltransferase (4)
Androgen Receptor (4)
P2 Receptor (4)
P-gp (4)
PERK (4)
Cannabinoid Receptor (3)
Antioxidant (3)
CaMK (3)
Adrenergic Receptor (3)
Integrin (3)
PARP (3)
Parasite (3)
NOD (3)
Akt (3)
Beta Amyloid (3)
p38 MAPK (3)
MAPK (3)
MEK (3)
Mitochondrial Metabolism (3)
Pim (3)
c-Met/HGFR (3)
Wnt/beta-catenin (3)
FAAH (3)
Transferase (3)
Carbonic Anhydrase (3)
Trk receptor (3)
Glucokinase (3)
DUB (3)
GPX (2)
Aurora Kinase (2)
MPO (2)
transporter (2)
Monoamine Oxidase (2)
MMP (2)
BACE (2)
AMPK (2)
Ephrin Receptor (2)
NMDAR (2)
Chloride channel (2)
NOS (2)
Adenosine Receptor (2)
DPP-4 (2)
DNA Alkylation (2)
ATM/ATR (2)
Antifungal (2)
c-Myc (2)
Aromatase (2)
PDK (2)
CXCR (2)
PLK (2)
CSF-1R (2)
Antiviral (2)
GSK-3 (2)
Topoisomerase (2)
RAAS (2)
IRE1 (2)
GPR (2)
HIF/HIF Prolyl-Hydroxylase (2)
Casein Kinase (2)
PKA (2)
S6 Kinase (2)
IDO (2)
Amino Acids and Derivatives (2)
IL Receptor (2)
Immunology & Inflammation related (2)
Gamma-secretase (2)
Reductase (2)
ALK (2)
CCR (2)
JNK (2)
Fatty Acid Synthase (2)
Vitamin (1)
TAM Receptor (1)
Anti-infection (1)
Telomerase (1)
Thioredoxin (1)
Reactive Oxygen Species (1)
AhR (1)
Sirtuin (1)
Transaminase (1)
TLR (1)
Thyroid hormone receptor(THR) (1)
SGK (1)
ribosome (1)
Acyltransferase (1)
SARS-CoV (1)
UGT (1)
Rho (1)
Progesterone Receptor (1)
Prostaglandin Receptor (1)
RSV (1)
Tie-2 (1)
Complement System (1)
Melanocortin Receptor (1)
Arginase (1)
c-Fms (1)
gp120/CD4 (1)
Glutathione reductase (1)
Glutathione Peroxidase (1)
Glutaminase (1)
Glucagon Receptor (1)
CAT (1)
FLAP (1)
cell cycle arrest (1)
Cell wall (1)
CFTR (1)
Hippo pathway (1)
EBI2/GPR183 (1)
Dynamin (1)
DprE1 (1)
Dopamine Receptor (1)
DNA-PK (1)
DNA gyrase (1)
Deubiquitinase (1)
Decarboxylase (1)
CRM1 (1)
HBV (1)
Histamine Receptor (1)
PGE Synthase (1)
Liver X Receptor (1)
p53 (1)
OX Receptor (1)
NPC1L1 (1)
MLK (1)
MELK (1)
CPT (1)
MALT (1)
LTR (1)
LRRK2 (1)
Lipoxygenase (1)
Histone Acetylation (1)
Lipase (1)
Leukotriene Receptor (1)
BMI-1 (1)
Isocitrate Dehydrogenase (IDH) (1)
Influenza Virus (1)
IGF-1R (1)
Hydroxylase (1)
Bombesin Receptor (1)
HMG-CoA Reductase (1)
ABC (1)
YAP (1)

Library Information Sample

Empty 1000025-07-9 1000413-72-8 229005-80-5 1000787-75-6 946387-07-1 1000998-59-3 1175526-27-8 1001288-58-9 1001350-96-4 1001404-83-6 Empty
Vadadustat TAK875 TAK-779 Tegobuvir RN-1734 BMS-687453 AM211 FT011 BMS754807 AAI101
Empty 1001625-82-6 1001645-58-4 1001753-24-7 1001908-89-9 1002304-34-8 1002-84-2 100291-86-9 100299-08-9 10030-52-1 10040-45-6 Empty
RPW-24 SRT1720 hydrochloride INH6 SRT 2183 AMG208 Pentadecanoic acid Apiopaeonoside Pemirolast potassium L-Anserine nitrate salt Sodium Picosulfate
Empty 100427-26-7 1004316-88-4 10045-45-1 100462-37-1 1004990-28-6 100-51-6 1005-24-9 1005264-47-0 1005334-57-5 1005342-46-0 Empty
Lercanidipine Cobicistat 1-Ethyl-2-benzimidazolinone ROSIRIDIN PF-AKT400 Benzyl alcohol 1-Methylnicotinamide chloride MX69 CVT-10216 LCL161
Empty 1005491-05-3 100-55-0 1005504-62-0 1005883-72-6 100643-71-8 1007207-67-1 10075-50-0 1007647-73-5 100784-20-1 10083-24-6 Empty
Tirasemtiv Roniacol Rg3039 Z433927330 Desloratadine CH5132799 5-Bromoindole Smurf1-IN-A01 Halosulfuron-methyl Piceatannol
Empty 100872-83-1 100874-08-6 1009119-64-5 1009119-65-6 100929-71-3 1009298-09-2 1009298-59-2 100929-99-5 1009734-33-1 10097-84-4 Empty
ML346 SB 4 Daclatasvir Daclatasvir dihydrochloride NADPH (tetracyclohexanamine) AZD8055 Vistusertib PAβN dihydrochloride HZ1157 Rotundine
Empty 1009816-48-1 1009817-63-3 1009820-21-6 100986-85-4 101001-34-7 1010411-21-8 1010-60-2 1011244-68-0 1011301-27-1 1011529-10-4 Empty
Thiamet G B-AP15 Silmitasertib Levofloxacin Pamicogrel GSK369796 Dihydrochloride 2-Chloronaphthoquinone TFAP Tenovin3 Azvudine
Empty 101152-94-7 101155-02-6 1011557-82-6 1011-74-1 101-20-2 1012054-59-9 101-21-3 101-26-8 101303-98-4 1013101-36-4 Empty
Milnacipran hydrochloride BW-A78U Tenovin-6 DL-Normetanephrine hydrochloride Triclocarban CUDC101 Chlorpropham Mestinon Zacopride hydrochloride PF04691502
Empty 101-31-5 1013-69-0 1013750-77-0 1013753-99-5 10138-52-0 1013920-15-4 1013937-63-7 1014691-61-2 101477-54-7 101494-95-5 Empty
L-Hyoscyamine Noreugenin ML-030 BC-1382 Gadolinium chloride Vorolanib VTP-27999 TFA GSK0660 Lomerizine hydrochloride 8-CHLOROQUINAZOLIN-4(1H)-ONE