Complement System Inhibitors

Cat.No.	Product Name	Information	Product Use Citations
S8522	Compstatin	Compstatin binds to primates’ complement component C3 and inhibits complement activation with IC50 of 12 μM.	bioRxiv, September 27, 2025, nan Proceedings of the National Academy of Sciences, May 13, 2025, e2412447122 ImmunoHorizons, March 1, 2024, 269-280
S0474	Avacopan (CCX168)	Avacopan is an orally administered and selective C5a receptor (C5aR) antagonist.	British Journal of Cancer, 2025, Online ahead of print Br J Cancer, 2025, 10.1038/s41416-025-03185-0 Nature Communications, 2024, 6519
S0803	Danicopan	Danicopan is a potent, selective and orally active inhibitor of factor D with Kd of 0.54 nM for human Factor D. This compound inhibits alternative pathway of complement (APC) activity, and has potential to block the alternative pathway of complement in paroxysmal nocturnal hemoglobinuria (PNH) and atypical hemolytic uremic syndrome (aHUS).	Scientific Reports, 2024, 18494 iScience, 2023, 108018
S3240	Phaseoloidin	Phaseoloidin, a homogentisic acid glucoside from Nicotiana attenuata trichomes, contributes to the plant's resistance against lepidopteran herbivores. This compound has anti-complement effects.
P1269^New	Pegcetacoplan acetate	Pegcetacoplan acetate, a PEGylated cyclic peptide, is the first approved inhibitor of complement component C3/C3b designed to treat adults with Paroxysmal Nocturnal Hemoglobinuria (PNH). It binds C3 and C3b to inhibit convertase-mediated C3 cleavage, blocking C3b opsonization (extravascular hemolysis) and downstream MAC formation (intravascular hemolysis).
S1322	Dexamethasone	Dexamethasone is a potent synthetic member of the glucocorticoid class of steroid drugs, and an interleukin receptor modulator that has anti-inflammatory and immunosuppressant effects. Dexamethasone induces autophagy and mitophagy. Dexamethasone is tested in hospitalized patients with COVID-19 and is found to have benefits for critically ill patients.	Blood, August 15 2024, 757-770 Signal Transduct Target Ther, 2025, 10(1):230 Signal Transduct Target Ther, 2025, 10(1):394
S2286	Cyclosporin A	Cyclosporin A, a non-polar cyclic oligopeptide, is an immunosuppressive agent that binds to cyclophilin and then inhibits calcineurin with IC50 of 7 nM in a cell-free assay. Cyclosporin A is generally given following transplant surgery to prevent rejection and has been used to test its toxic effect on a perfused 3D proximal tubule model.Cyclosporin A (NSC 290193) can be used to induce animal models of Chronic Rejection of Liver Transplantation.	Frontiers in Immunology, May 25, 2022, 861292 Circulation Research, March 27, 2026, e327680 Anticancer Research, March 2023, 1103-1112
S3124	Dexamethasone Acetate	Dexamethasone (NSC 39471,Dexamethasone 21-acetate) is a potent synthetic member of the glucocorticoid class of steroid drugs, and an interleukin receptor modulator that has anti-inflammatory and immunosuppressant effects.	Acta Pharm Sin B, 2024, 14(8):3528-3542 STAR Protoc, 2023, 4(2):102342 Exp Mol Med, 2022, 54(9):1450-1460
S4028	Dexamethasone Sodium Phosphate	Dexamethasone (Dexamethasone 21-phosphate disodium salt) is a potent synthetic member of the glucocorticoid class of steroid drugs, and an interleukin receptor modulator that has anti-inflammatory and immunosuppressant effects.	Proc Natl Acad Sci U S A, 2025, 122(12):e2426107122 J Tradit Chin Med, 2025, 45(4):739-746 Cancer Cell, 2024, 42(9):1507-1527.e11
S3612	Rosmarinic acid	Rosmarinic acid (RA, Rosemary acid) is a naturally occurring hydroxylated compound. It has the ability to block complement fixation, inhibit lipoxygenase and cyclooxygenase activity and inhibit the expression of CCL11 and CCR3 by suppressing the IKK-β activity in NF-κB activation signaling.	Theranostics, 2025, 15(6):2523-2543 World J Clin Oncol, 2025, 16(5):105341 Free Radic Biol Med, 2021, S0891-5849(21)00198-2
E0119	LNP023 (Iptacopan) Hydrochloride	Iptacopan (LNP023) Hydrochloride is a first-in-class, orally administered, potent and highly selective factor B inhibitor with an IC50 of 12 nM and a Kd value of 7.9 nM. Iptacopan exhibits excellent selectivity over other proteases affording IC50s of >30 μM across a panel of 41 human proteases.
S9138	Picfeltarraenin IA	Picfeltarraenin IA is an AChE inhibitior, and an potential PI3K and EGFR inhibitor. It also acts as an inhibitor on both the classical and alternative pathways of the complement system.