2. Signaling Pathways
  3. MAPK/ERK Pathway
  4. Raf
  5. B-Raf Isoform

B-Raf

B-Raf is a serine/threonine protein kinase encoded by BRAF and functions as a central signal transducer in the RAS-RAF-MEK-ERK signaling cascade that regulates cell proliferation, differentiation, and survival[1][2]. Mechanistically, activated B-Raf phosphorylates MEK, leading to ERK activation and propagation of mitogenic signaling, making B-Raf a critical regulator of MAPK pathway output[2]. Dysregulation of this pathway is strongly linked to oncogenesis, and somatic BRAF mutations are among the most common kinase alterations identified in human cancer, particularly melanoma, colorectal cancer, thyroid cancer, and non-small-cell lung cancer[1][3]. In disease models, the canonical BRAF V600E mutation constitutively activates kinase signaling and promotes tumor cell growth independent of normal upstream regulatory inputs[2][3]. Compared with the related RAF isoforms A-Raf and C-Raf (RAF1), B-Raf displays stronger basal kinase activity and is the most potent activator of MEK-ERK signaling, making it a dominant MAPK pathway driver in many BRAF-mutant tumors[2]. For experimental applications, selective B-Raf inhibitors have been widely used to suppress oncogenic MAPK signaling and to investigate pathway dependence in cancer models[4]. The development of mutation-selective inhibitors, including compounds targeting BRAF V600E, established B-Raf as a validated therapeutic and mechanistic target and continues to support research on signaling regulation, drug resistance, and combination treatment strategies[4][5].

B-Raf Related Products (85):

Cat. No. Product Name Effect Purity
  • HY-10201
    Sorafenib
    		Inhibitor 99.85%
    Sorafenib (Bay 43-9006) is a potent oral active multikinase inhibitor. Sorafenib blocks autophosphorylation and activity of receptor tyrosine kinases (VEGFR-2, VEGFR-3) and RAF family kinases, thereby suppressing the RAF/MEK/ERK and PI3K/Akt pathways, inhibiting STAT3 phosphorylation, and selectively inhibiting the MAPK pathway in cancer cells. Sorafenib induces cell cycle arrest, autophagy, apoptosis, and PARP cleavage, reduces Bcl-2, Bcl-XL, cyclin D1 levels, and activates Bak and Bax. Sorafenib inhibits tumor growth and metastasis in mouse and rat models. Sorafenib can be used for cancer research, such as colon, breast, non-small-cell lung cancer (NSCLC), ovarian, pancreatic, melanoma, colorectal and hepatocellular carcinoma.
  • HY-14660
    Dabrafenib
    		Inhibitor 99.94%
    Dabrafenib (GSK2118436A) is an ATP-competitive inhibitor of Raf with IC50s of 5 nM and 0.6 nM for C-Raf and B-RafV600E, respectively.
  • HY-12057
    Vemurafenib
    		Inhibitor 99.90%
    Vemurafenib (PLX4032) is a first-in-class, selective, potent inhibitor of B-RAF kinase, with IC50s of 31 and 48 nM for RAFV600E and c-RAF-1, respectively. Vemurafenib induces cell autophagy.
  • HY-10331
    Regorafenib
    		Inhibitor 99.93%
    Regorafenib (BAY 73-4506) is an orally active and potent multi-targeted receptor tyrosine kinase inhibitor, with IC50 values of 13/4.2/46, 22, 7, 1.5 and 2.5 nM for VEGFR1/2/3, PDGFRβ, Kit, RET and Raf-1, respectively. Regorafenib shows very robust antitumor and antiangiogenic activity.
  • HY-10320
    Doramapimod
    		Inhibitor 99.98%
    Doramapimod (BIRB 796) is an orally active, highly potent p38 MAPK inhibitor, which has an IC50 for p38α=38 nM, for p38β=65 nM, for p38γ=200 nM, and for p38δ=520 nM. Doramapimod has picomolar affinity for p38 kinase (Kd=0.1 nM). Doramapimod also inhibits B-Raf with an IC50 of 83 nM.
  • HY-N13841
    2,4,3',4',6'-Penta-O-(3-methylbutanoyl)sucrose
    2,4,3',4',6'-Penta-O-(3-methylbutanoyl)sucrose is an FGFR3 and BRAF binder, and is an isovaleryl sucrose ester that can be found in Atractylodes japonica. 2,4,3',4',6'-Penta-O-(3-methylbutanoyl)sucrose shows low cytotoxicity against cancer cells.
  • HY-10966G
    SB-590885 (GMP)
    		Inhibitor
    SB-590885 GMP is SB-590885 (HY-10966) produced by using GMP guidelines. GMP small molecules works appropriately as an auxiliary reagent for cell therapy manufacture. SB-590885 is a BRAF/c-Raf kinase inhibitor that selectively targets B-Raf, and it amplifies the ERK/MAPK signaling pathway in RAS-activated cells. SB-590885 effectively inhibits the malignant proliferation, transformation and tumorigenicity of oncogenic B-Raf cells; it also induces the proliferation of erythroid progenitor cells, delays their differentiation and promotes hemoglobin synthesis, thereby improving ineffective erythropoiesis and reducing apoptosis. SB-590885 exerts a synergistic effect with TGF-β inhibitors and glucocorticoids, significantly promoting the formation of erythroid colonies in cells from patients with Diamond-Blackfan anemia (DBA). SB-590885 is mainly used in relevant studies on DBA, cisplatin-induced myelosuppression-related anemia, and pan-cancers such as melanoma and colorectal cancer.
  • HY-181061
    COX/5-LO-IN-2
    		Inhibitor
    COX/5-LO-IN-2 is a COX2, EGFR, COX1, 5-LOX, BRAF and FAK inhibitor with IC50 of 1.22 μM, 2.5 μM, 2.95 μM, 4.65 μM, 7.4 μM, 12.2 μM, respectively. COX/5-LO-IN-2 induces cell growth arrest at G2/M phase. COX/5-LO-IN-2 triggers apoptotic activity by up-regulating proapoptotic proteins p53, Bax, and caspase-7 and down-regulating anti-apoptotic protein Bcl-2. COX/5-LO-IN-2 can be used for the research of breast cancer.
  • HY-10966
    SB-590885
    		Inhibitor 99.77%
    SB-590885 is a BRAF/c-Raf kinase inhibitor that selectively targets B-Raf, and it amplifies the ERK/MAPK signaling pathway in RAS-activated cells. SB-590885 effectively inhibits the malignant proliferation, transformation and tumorigenicity of oncogenic B-Raf cells; it also induces the proliferation of erythroid progenitor cells, delays their differentiation and promotes hemoglobin synthesis, thereby improving ineffective erythropoiesis and reducing apoptosis. SB-590885 exerts a synergistic effect with TGF-β inhibitors and glucocorticoids, significantly promoting the formation of erythroid colonies in cells from patients with Diamond-Blackfan anemia (DBA). SB-590885 is mainly used in relevant studies on DBA, cisplatin-induced myelosuppression-related anemia, and pan-cancers such as melanoma and colorectal cancer.
  • HY-18652
    Avutometinib
    		Inhibitor 99.43%
    Avutometinib (Ro 5126766) is a first-in-class dual MEK/RAF inhibitor that allosterically inhibits BRAFV600E, CRAF, MEK, and BRAF (IC50: 8.2, 56, 160 nM, and 190 nM, respectively).
  • HY-10201A
    Sorafenib tosylate
    		Inhibitor 99.98%
    Sorafenib (Bay 43-9006) tosylate is a potent oral active multikinase inhibitor. Sorafenib blocks autophosphorylation and activity of receptor tyrosine kinases (VEGFR-2, VEGFR-3) and RAF family kinases, thereby suppressing the RAF/MEK/ERK and PI3K/Akt pathways, inhibiting STAT3 phosphorylation, and selectively inhibiting the MAPK pathway in cancer cells. Sorafenib tosylate induces cell cycle arrest, autophagy, apoptosis, and PARP cleavage, reduces Bcl-2, Bcl-XL, cyclin D1 levels, and activates Bak and Bax. Sorafenib tosylate inhibits tumor growth and metastasis in mouse and rat models. Sorafenib tosylate can be used for cancer research, such as colon, breast, non-small-cell lung cancer (NSCLC), ovarian, pancreatic, melanoma, colorectal and hepatocellular carcinoma.
  • HY-112089
    Naporafenib
    		Inhibitor 99.92%
    Naporafenib (LXH254) is a potent, selective, orally active, type II BRAF and CRAF inhibitor, with IC50 values of 0.072 and 0.21 nM against CRAF and BRAF, respectively.
  • HY-51424
    PLX-4720
    		Inhibitor 99.90%
    PLX-4720 is a potent and selective inhibitor of B-RafV600E with IC50 of 13 nM in a cell-free assay, equally potent to c-Raf-1(Y340D and Y341D mutations), and 10-fold selectivity for B-RafV600E than wild-type B-Raf.
  • HY-12558
    LY3009120
    		Inhibitor 98.66%
    LY3009120 (DP-4978) is a pan RAF inhibitor which inhibits BRAFV600E, BRAFWT and CRAFWT with IC50s of 5.8, 9.1 and 15 nM, respectively.
  • HY-50864
    GDC-0879
    		Inhibitor 99.49%
    GDC-0879 is a potent and selective B-Raf inhibitor with an IC50 of 0.13 nM.
  • HY-14660A
    Dabrafenib Mesylate
    		Inhibitor 99.94%
    Dabrafenib Mesylate is a potent and selective Raf kinase inhibitor with IC50s of 0.6 and 5.0 nM for RafV600E and c-Raf, respectively.
  • HY-109080
    Belvarafenib
    		Inhibitor 98.97%
    Belvarafenib (HM95573) is a potent and pan RAF (Rapidly Accelerated Fibrosarcoma) inhibitor, with IC50s of 56 nM, 7 nM and 5 nM for B-RAF, B-RAFv600E and C-RAF respectively.
  • HY-18972
    Plixorafenib
    		Inhibitor 99.80%
    PLX8394 is a potent and selective BRaf inhibitor, with an IC50 of appr 5 nM for BRAFV600E.
  • HY-15200
    Agerafenib
    		Inhibitor 99.78%
    Agerafenib (CEP-32496; RXDX-105) is a highly potent and orally efficacious inhibitor of BRAFV600E with a Kd of 14 nM.
  • HY-11004
    AZ 628
    		Inhibitor 99.44%
    AZ 628 is a pan-Raf kinase inhibitor with IC50s of 105, 34 and 29 nM for B-Raf, B-RafV600E, and c-Raf-1, respectively.
Cat. No. Product Name / Synonyms Application Reactivity