CHF 30.00
In stock
AG-CR1-3734-M01010 mgCHF 30.00
AG-CR1-3734-M05050 mgCHF 70.00
AG-CR1-3734-M250250 mgCHF 170.00
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Product Details
Synonyms LY3009104; INCB28050; 1-(Ethylsulfonyl)-3-[4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]-3-azetidineacetonitrile
Product Type Chemical


MW 371.4
CAS 1187594-09-7
Purity Chemicals ≥98% (HPLC)
Appearance White to off-white solid.
Solubility Soluble in DMSO (30mg/ml) or DMF (40mg/ml).
Identity Determined by 1H-NMR.
Smiles CCS(N(C1)CC1(CC#N)N(N=C2)C=C2C3=NC=NC4=C3C=CN4)(=O)=O
Shipping and Handling
Shipping AMBIENT
Short Term Storage +4°C
Long Term Storage -20°C
Handling Advice Keep cool and dry.
Use/Stability Stable for at least 2 years after receipt when stored at -20°C.
MSDS Download PDF
Product Specification Sheet
Datasheet Download PDF
  • Baricitinib is a selective orally bioavailable JAK1/JAK2 inhibitor with nanomolar potency against JAK1 (IC50 = 5.9nM) and JAK2 (IC50 = 5.7nM) and inhibits Tyk2 (IC50 = 53nM). It displays >100-fold selectivity for JAK1/2 over JAK3 (IC50 > 400nM). Janus kinases (JAKs) are non-receptor kinases and play important roles in the proinflammatory signaling pathways that are frequently over-activated in autoimmune disorders such as rheumatoid arthritis. Upon binding of extracellular cytokines and growth factors, JAKs are phosphorylated and activate signal transducers and activators of transcription (STATs). Via these signaling cascades, inflammatory cytokine and chemokine transcription is induced to form inflammatory mediators including IL-2, IL-6, IL-12, IL-15, IL-23.
  • Baricitinib inhibits intracellular signaling of multiple proinflammatory cytokines including IL-6 and IL-23 at concentrations <50nM. It inhibits IL-6 receptor signaling, IL-6-induced STAT phosphorylation and subsequent pro-inflammatory chemokine (MPC-1) and cytokine (IL-17 and IL-22) production in PBMCs and T cells and displays anti-inflammatory and disease modifying effects in the rat adjuvant arthritis model. It also has been shown to block MSU-induced inflammasome activation.
  • Baricitinib has potential application in various inflammatory disorders, including rheumatoid arthritis and systemic lupus erythematosus (SLE).
  • The majority of viruses enter cells through receptor mediated endocytosis. Baricitinib potently inhibits AP-2 associated protein kinase 1 (AAK1) and also binds cyclin G-associated kinase, both regulators of endocytosis. Inhibiting AAK1 might interrupt the passage of the SARS-CoV-2 virus into cells and also the intracellular assembly of virus particles. In addition the drug’s anti-inflammatory activity is expected to act on the inflammatory cascade associated with COVID-19.
Product References
  1. Selective inhibition of JAK1 and JAK2 is efficacious in rodent models of arthritis: Preclinical characterization of INCB028050: J.S. Fridman, et al.; J. Immunol. 184, 5298 (2010)
  2. Inhibition of Janus kinase/signal transducer and activator of transcription (JAK/STAT) signalling pathway in rheumatoid synovial fibroblasts using small molecule compounds: K. Migita, et al.; Clin. Exper. Immunol. 174, 356 (2013)
  3. Baricitinib for the treatment of rheumatoid arthritis: S. Kubo, et al.; Expert Rev. Clin. Immunol. 12, 911 (2016)
  4. Janus Kinase Inhibitor Baricitinib Modulates Human Innate and Adaptive Immune System: S. Kubo, et al.; Front. Immunol. 9, 1510 (2018)
  5. Baricitinib for systemic lupus erythematosus: J. Mucke & M. Schneider; Lancet 392, 190 (2018)
  6. Uric acid-mediated inflammasome activation in IL-6 primed innate immune cells is regulated by baricitinib: J. Temmoku, et al.; Mod. Rheumatol. (Epub ahead of print) (2020)
  7. Baricitinib as potential treatment for 2019-nCoV acute respiratory disease: P. Richardson, et al.; Lancet 395, e30 (2020)
  8. Baricitinib therapy in COVID-19: A pilot study on safety and clinical impact: F. Cantini, et al.; J. Infect. 23, S0163 (2020)
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