Hydroxyhexamide is a pharmacologically active metabolite of Acetohexamide, used as a hypoglycemic agents.

Hypocrellin B is an apoptosis inducer. The hypocrellins are pigments isolated from the fungi Hypocrella bambusae and Shiraia bambusicola. They are used as photosensitizers for photodynamic therapy of cancer.

Hypoxia-inducible factor prolyl hydroxylase inhibitor

HZ-1157 is a novel potent inhibitor of HCV NS3/4A protease; Potent Dengue virus inhibitor

I-191 is a novel potent, selective protease-activated receptor 2 (PAR2) antagonist with pIC50 of 7.2 in cell-based assays.

IACS-010759 (IACS010759) is a small molecule inhibitor of mitochondrial oxidative phosphorylation (OXPHOS), targets complex I of the mitochondrial electron transport chain.

Iberdomide (CC-220) is a cereblon modulator in clinical development for systemic lupus erythematosis. Iberdomide exhibits an IC50 of 60 nM in TR-FRET cereblon binding assay.

Iberin, a sulfoxide analogue of sulforaphane, is a naturally occurring member of isothiocyanate family. It inhibits cell survival with an IC50 of 2.3 μM in HL60 cell.

I-BET151 (GSK1210151A) is a novel selective BET inhibitor for BRD2, BRD3 and BRD4 with IC50 of 0.5 μM, 0.25 μM, and 0.79 μM, respectively.

Ibiglustat (Genz-682452,SAR402671), is a potent and selective Glucosylceramide synthase inhibitor and ceramide glucosyltransferase inhibitor.

IB-MECA is a potent and selective A3 adenosine receptor agonist (Ki values are 1.1, 54 and 56 nM for A3, A1 and A2A receptors respectively).

IBMX(NSC165960; SC2964) is a competitive nonselective PDEs inhibitor with IC50 of 2-50 uM but does not inhibit PDE8 or PDE9; nonselective adenosine receptor antagonist.

I-BRD9 is a potent and selective BRD9 inhibitor (pIC50 = 7.3). Exhibits >70-fold selectivity for BRD9 over a panel of 34 other bromodomains and >700-fold selectivity over the BET family.

Ibudilast(KC-404;AV-411;MN-166) is a relatively nonselective phosphodiesterase inhibitor which has been marketed for treating asthma,ibudilast (MN-166) is tested to treat acute respiratory distress syndrome (ARDS) associated with Covid-19.

Ibutamoren mesylate (MK-0677) is an orally active nonpeptide growth hormone (GH) secretagogue.

IC 86621 is a potent DNA-PK inhibitor with IC50 of 135 nM, also inhibits p110β (IC50=135 nM), less potent for p110α/γ/δ (IC50=880-1,400 nM).

IC261 is a novel inhibitor of CK1, triggers the mitotic checkpoint control. The IC50 of IC261 for CK1 was 16 μM and for Cdk5 is 4.5 mM.

IC-87114 was the first isoform-selective PI3K inhibitor. p110δ(IC50 = 0.13 μM) vs. p110α(IC50 = 200 μM), p110β(IC50 = 16 μM) and p110γ(IC50 = 61 μM).

ICA 069673 is a potassium channel opener with selective action for KCNQ2 and KCNQ3 (EC50=0.69 μM). No meeasurable activity was displayed over a variety of cardiac ion channels.

ICA-1(ICA-1T)is a potent, specific inhibitor of Protein Kinase C-iota (PKC-ι) with IC50 of 0.1 uM, does not inhibit PKC-ζ, the closely related atypical PKC family member.

ICA-121431 is a potent, selective inhibitor of the human Nav1.3 and Nav1.1 voltage gated sodium channels (IC50 = 19 nM) with little or no activity against human Nav1.5 or Nav1.7 channels.

Icariside I is a metabolite of Icarlin, which could regulate bone remodeling and is recognized as an effective agent for the treatment of osteoporosis.