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C2 domains

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By Targets:	Autophagy (1) Btk (1) CGRP Receptor (1) Complement System (1) EGFR (1) Ferroptosis (1) Isotope-Labeled Compounds (1) Ligands for Target Protein for PROTAC (1) Myosin (1) Phospholipase (1) Ras (1) WDR5 (1)
By Research Areas:	Cancer (5) Inflammation/Immunology (2) Neurological Disease (1)

Inhibitors & Agonists

Peptides

Inhibitory Antibodies

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Products

Isotope-Labeled Compounds

Cat. No.	Product Name	Target	Research Areas	Chemical Structure

HY-P990025

Empasiprubart ARGX-117	Complement System	Inflammation/Immunology
Empasiprubar (ARGX-117) is a humanized inhibitory monoclonal antibody targeting complement C2. Empasiprubar binds to the Sushi-2 domain of C2, preventing the formation of C3 pre convertase and inhibiting the activation of classical and lectin pathways upstream of C3 activation. Empasiprubar can prevent complement mediated autoimmune hemolytic anemia and antibody mediated organ transplant rejection. Empasiprubar can prevent neuroglial lymphoconjunctival injury in GM1 antibody mediated mouse models .

HY-162809

XMU-MP-9	Ras	Cancer
XMU-MP-9 is a bifunctional compound that binds to the C2 domain of Nedd4-1 and the allosteric site of K-Ras. XMU-MP-9 enhances the interaction between Nedd4-1 and K-Ras, induces conformational changes in the Nedd4-1/K-Ras complex, promotes the ubiquitination and degradation of multiple K-Ras mutants, and inhibits the proliferation of cells carrying K-Ras mutants. XMU-MP-9 can be used for the study of colon, lung and pancreatic cancer .

HY-114457

Phosphatidylinositol 4,5-bisphosphate L-alpha-Phosphatidylinositol-4,5-bisphosphate; (PtdIns)-(4,5)-P2	Phospholipase	Inflammation/Immunology
Phosphatidylinositol 4,5-bisphosphate (L-alpha-Phosphatidylinositol-4,5-bisphosphate) is a plasma membrane lipid that is enriched in the cytoplasmic leaflet of the plasma membrane. Phosphatidylinositol 4,5-bisphosphate serves as a substrate for phospholipase C and class I PI3K, generating diacylglycerol, inositol (1,4,5)-trisphosphate, and phosphatidylinositol (3,4,5)-trisphosphate. Phosphatidylinositol 4,5-bisphosphate contributes to lamellipodial protrusion, directional cell migration, focal adhesion lipid generation, and trafficking of the GABA_A receptor. Phosphatidylinositol 4,5-bisphosphate can be used in research related to acute lung injury and pulmonary edema .

HY-163084

HJ445A	Myosin	Cancer
HJ445A is a potent MYOF inhibitor and binds to the MYOF-C2D domain with a K_D of 0.17 μM. HJ445A potently repressed the proliferation of gastric cancer cells with IC₅₀ values of 0.16 and 0.14 μM in MGC803 and MKN45, respectively. HJ445A demonstrates superior antitumor efficacy in vivo and can be used for cancer research .

HY-141798

OICR-9429-N-C2-NH2	Ligands for Target Protein for PROTAC WDR5	Cancer
OICR-9429-N-C2-NH2 is a ligand for *Wd40 repeat domain* protein 5 (WDR5)** extracted from patent WO2019246570A1, intermediate 2. OICR-9429-N-C2-NH2 can be used in the synthesis of PROTACs .

HY-162081

BTK-IN-32	Btk	Cancer
BTK-IN-32 (compound C2) is a potent inhibitor of BTK. BTK-IN-32 activates full-length BTK and smaller multidomain BTK fragments instead of the isolated kinase domain .

HY-W777297

Lapatinib-13C2,15N Ditosylate	Isotope-Labeled Compounds EGFR Autophagy Ferroptosis	Cancer
Lapatinib- ¹³C₂, ¹⁵N Ditosylate is the ¹³C- and ¹⁵N-labeled Lapatinib ditosylate (HY-50898A). Lapatinib ditosylate (GW572016 ditosylate) is a potent inhibitor of the ErbB-2 and EGFR tyrosine kinase domains with IC₅₀ values against purified EGFR and ErbB-2 of 10.2 and 9.8 nM, respectively .

HY-182539

DD04107	CGRP Receptor	Others Neurological Disease
DD04107 is a neuronal exocytosis inhibitor with a rat *Syt1-C2B* domain binding K_a of 2.4 μM. DD04107 interferes with synaptobrevin-syntaxin-SNAP-25 complex formation and Syt1-SNARE complex interaction to block α-calcitonin gene-related peptide (α-CGRP) exocytotic release from primary sensory neurons. DD04107 blocks inflammatory ion channel recruitment to nociceptor plasma membranes. DD04107 can be used for the research of chronic inflammatory pain, neuropathic pain, osteosarcoma pain, chemotherapy-induced peripheral neuropathy, diabetic neuropathy, inflammatory pain .

Cat. No.	Product Name	Target	Research Area

HY-182539

DD04107	CGRP Receptor	Others Neurological Disease
DD04107 is a neuronal exocytosis inhibitor with a rat *Syt1-C2B* domain binding K_a of 2.4 μM. DD04107 interferes with synaptobrevin-syntaxin-SNAP-25 complex formation and Syt1-SNARE complex interaction to block α-calcitonin gene-related peptide (α-CGRP) exocytotic release from primary sensory neurons. DD04107 blocks inflammatory ion channel recruitment to nociceptor plasma membranes. DD04107 can be used for the research of chronic inflammatory pain, neuropathic pain, osteosarcoma pain, chemotherapy-induced peripheral neuropathy, diabetic neuropathy, inflammatory pain .

Cat. No.	Product Name	Target	Research Area	Image

HY-P990025

Empasiprubart ARGX-117	Complement System	Inflammation/Immunology
Empasiprubar (ARGX-117) is a humanized inhibitory monoclonal antibody targeting complement C2. Empasiprubar binds to the Sushi-2 domain of C2, preventing the formation of C3 pre convertase and inhibiting the activation of classical and lectin pathways upstream of C3 activation. Empasiprubar can prevent complement mediated autoimmune hemolytic anemia and antibody mediated organ transplant rejection. Empasiprubar can prevent neuroglial lymphoconjunctival injury in GM1 antibody mediated mouse models .

Cat. No.	Product Name	Category	Target	Chemical Structure

HY-114457

Phosphatidylinositol 4,5-bisphosphate L-alpha-Phosphatidylinositol-4,5-bisphosphate; (PtdIns)-(4,5)-P2	Structural Classification Human Gut Microbiota Metabolites Classification of Application Fields Other Diseases Endogenous metabolite Disease Research Fields Lipid Source Classification	Phospholipase
Phosphatidylinositol 4,5-bisphosphate (L-alpha-Phosphatidylinositol-4,5-bisphosphate) is a plasma membrane lipid that is enriched in the cytoplasmic leaflet of the plasma membrane. Phosphatidylinositol 4,5-bisphosphate serves as a substrate for phospholipase C and class I PI3K, generating diacylglycerol, inositol (1,4,5)-trisphosphate, and phosphatidylinositol (3,4,5)-trisphosphate. Phosphatidylinositol 4,5-bisphosphate contributes to lamellipodial protrusion, directional cell migration, focal adhesion lipid generation, and trafficking of the GABA_A receptor. Phosphatidylinositol 4,5-bisphosphate can be used in research related to acute lung injury and pulmonary edema .

Cat. No.	Product Name	Chemical Structure

HY-W777297

Lapatinib-13C2,15N Ditosylate
Lapatinib- ¹³C₂, ¹⁵N Ditosylate is the ¹³C- and ¹⁵N-labeled Lapatinib ditosylate (HY-50898A). Lapatinib ditosylate (GW572016 ditosylate) is a potent inhibitor of the ErbB-2 and EGFR tyrosine kinase domains with IC₅₀ values against purified EGFR and ErbB-2 of 10.2 and 9.8 nM, respectively .

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BODIPY 493/503 purchased from MedChemExpress. Usage Cited in: Nat Commun. 2025 Feb 1;16(1):1241. [Abstract]

MedchemExpress Validation 01

Western blot analysis of extracts from THP-1(lane 2(20μg), Jurkat (lane 3(20μg) and NIH3T3(lane 4(20μg) using FOXO1A (HY-P80132) Rabbit mAb. Proteins were transferred to a PVDF membrane and blocked with 5% non-fat milk in TBST for 2 hour at room temperature. The primary antibody (1/1000) and Loading control antibody (Beta Actin, HY-P80438, 1/10000) was used in 5% non-fat milk in TBST at 4°C overnight. Goat Anti-Mouse/Rabbit IgG-HRP Secondary Antibody (1/10000) was used for 1 hour at room temperature. Western blot analysis of extracts from THP-1(lane 2(20μg), Jurkat (lane 3(20μg) and NIH3T3(lane 4(20μg) using FOXO1A (HY-P80132) Rabbit mAb. Proteins were transferred to a PVDF membrane and blocked with 5% non-fat milk in TBST for 2 hour at room temperature. The primary antibody (1/1000) and Loading control antibody (Beta Actin, HY-P80438, 1/10000) was used in 5% non-fat milk in TBST at 4°C overnight. Goat Anti-Mouse/Rabbit IgG-HRP Secondary Antibody (1/10000) was used for 1 hour at room temperature. Western blot analysis of extracts from THP-1(lane 2(20μg), Jurkat (lane 3(20μg) and NIH3T3(lane 4(20μg) using FOXO1A (HY-P80132) Rabbit mAb. Proteins were transferred to a PVDF membrane and blocked with 5% non-fat milk in TBST for 2 hour at room temperature. The primary antibody (1/1000) and Loading control antibody (Beta Actin, HY-P80438, 1/10000) was used in 5% non-fat milk in TBST at 4°C overnight. Goat Anti-Mouse/Rabbit IgG-HRP Secondary Antibody (1/10000) was used for 1 hour at room temperature.

BODIPY 493/503 purchased from MedChemExpress. Usage Cited in: Nat Commun. 2025 Feb 1;16(1):1241. [Abstract]

MedchemExpress Validation 01

MedchemExpress Validation 03

Western blot analysis of extracts from THP-1(lane 2(20μg), Jurkat (lane 3(20μg) and NIH3T3(lane 4(20μg) using FOXO1A (HY-P80132) Rabbit mAb. Proteins were transferred

MedchemExpress Validation 04

MedchemExpress Validation

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