Cyclothiazide (Doburil) is a positive allosteric modulator of the AMPA and kainate receptors that potentiates AMPA-mediated glutamate currents.

Cyclophilin inhibitor C31 (SMCypI C31) is a small-molecule cyclophilin (CypA) inhibitor (SMCypI) with PPIase inhibition IC50 of 0.1 uM, displays anti-HCV activity (HCV Gt1b replicon EC50=0.4 uM) and disrupts the CypA-NS5A interaction.

Cyclopamine tartrate is a natural steroidal alkaloid that inhibits hedgehog (Hh) signaling with IC50 of 46 nM.

Cyclocreatine Phosphate (AM 285) is an analog of the creatine kinase CKMT1 substrate creatine and inhibitor of the creatine biosynthesis pathway.

Cyclo(His-Pro) is a cyclic dipeptide structurally related to tyreotropin-releasing hormone.

Cyclapolin 9 is a potent, selective, and ATP-competitive polo-like kinase PLK1 inhibitor with IC50 of 500 nM..

Cyclapolin 1 is a potent and selective PLK1 inhibitor that promotes loss of centrosome integrity and microtubule nucleating ability apparently through increased accessibility of protein phosphatases.

CXL017 is a small molecule that has selective cytotoxicity toward MDR cancer cell lines in vitro, through inhibition of the sarco/endoplasmic reticulum Ca(2+)-ATPase (SERCA) with IC50 of 15 uM.

CXCR2-IN-68 is a potent, selective, brain penetrant, and orally bioavailable CXCR2 antagonist with pIC50 of 9.0, displays 730-fold selectivity over CXCR1 and >1,900-fold selectivity over all other chemokine receptors.

CXCR2-IN-1 is a central nervous system penetrant CXCR2 antagonists with a pIC50 of 9.3.

CX-614 is a positive allosteric modulator of AMPA receptors, shows neuroprotective effects for treatment of Parkinson's disease and Alzheimer's disease.

CX 4338 (CX4338, CX-4338) is a potent, selective CXCR2 inhibitor that selectively inhibits CXCR2-mediated recruitment of β-arrestin-2 with IC50 of 6.3 uM.

CWP-232228 is a highly potent small-molecule Wnt/β-catenin signaling inhibitor that targets the β-catenin/Tcf4 interaction in the nucleus.

CVT-12012 is a potent and orally bioavailable stearoyl-coA desaturase (SCD) inhibitor, with IC50s of 38 nM, 6.1 nM for rat microsomal and human HEPG2, respectively.

Cuspin-1 is a small molecule upregulator of SMN (Survival of Motor Neuron protein) with EC50 of 18 uM.

CUR-61414 is a small molecule Hedgehog (Hh) inhibitor that can block elevated Hh signaling activity resulting from oncogenic mutations in Patched-1, binds directly with Smoothened (Ki=44 nM).

CU-3 (DGKα inhibitor CU-3) is a is a novel potent, selective diacylglycerol kinase α (DGKα) inhibitor with IC50 of 0.6 uM, targets the catalytic region, but not the regulatory region.

CU239 is a novel non-retinoid RPE65 inhibitor that selectively inhibits isomerase activity of RPE65 with IC50 of 6 uM.

CTS-1027 is a potent small molecule inhibitor of MMPs(IC50=0.4 nM/0.6 nM for MMP2/MMP13); >1,000 fold selectivity over MMP1.

CTPB is an anacardic acid derivative, was reported as a selective activator of p300 (KAT3B) HAT activity but not PCAF (KAT2B), which enhanced HAT-dependent transcriptional activation.

CTN06 is a potent Etk (BMX) and Btk dual inhibitor with IC50 of 200 and 50 nM, respectively.

CTDP-32476 is a potent and selective dopamine transporter (DAT) inhibitor and a competitive inhibitor of cocaine binding to the DAT with Ki of 12 nM.

CTA095 (CTA-095) is a potent Etk (BMX) and Src dual inhibitor with IC50 of 60 and 120 nM, respectively, shows no significant inhibition on Btk and Yes at 10 uM.

CTA056 (CTA 056) is a potent, selective inhibitor of interleukin-2-inducible T-cell kinase (Itk) with IC50 of ~100 nM, also inhibits Btk (IC50=400 nM), but shows no significant inhibition for Etk (BMX kinase, IC50=5 uM).

CT-707 (Conteltinib) is a novel multikinase inhibitor targeting FAK (IC50=1.6 nM), ALK and Pyk2, exerts synergistic antitumor effects against hepatocellular carcinoma in vitro and in vivo.

CSRM617 hydrochloride (CSRM-617) is a small-molecule inhibitor of the transcription factor ONECUT2 (OC2) with Kd of 7.43 uM in SPR assays, binds to OC2-HOX domain directly.

CSN5i-3 (CSN5 inhibitor 3) is a potent, selective and orally available inhibitor of CSN5 with IC50 of 5.8 nM, the proteolytic subunit of COP9 signalosome (CSN).

CSLP43 (RIPK2 inhibitor CSLP43) is a novel potent, ATP pocket-binding RIPK2 inhibitor with IC50 of 19.9 nM in ADPGlo assay, demonstrates inhibition of both the RIPK2-XIAP interaction, and of cellular and in vivo NOD2 signaling.

CSIC E379 is a potent, selective uncoupling proteins UCP1/UCP2 inhibitor with EC50 of 20 uM/30 uM, respectively.

CS-526 (AKU 517.