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Macitentan is a dual antagonist of the endothelin (ET) receptors type A and B (IC50s = 0.5 and 391 nM in a radioligand binding assay using recombinant ETA and ETB, respectively).{36210} Macitentan inhibits intracellular Ca2+ increases induced by the endothelin isoform ET-1 in human pulmonary arterial smooth muscle cells (HPASMCs; IC50 = 0.9 nM), contractions of isolated rat aortic rings (pA2 = 7.6 for ETA), and sarafotoxin S6c-induced contractions of isolated rat tracheal rings (pA2 = 5.9 for ETB). Macitentan increases plasma ET-1 concentrations in normotensive rats and decreases mean arterial blood pressure in DOCA-salt hypertensive rats (ED50 = 1 mg/kg). Oral administration (30 mg/kg per day) prevents development of pulmonary hypertension and right ventricle hypertrophy in a rat model of hypertension induced by monocrotaline (Item No. 16666). It also decreases the number of vascular and tubule-interstitial lesions and amount of glomerular damage in a rat model of diabetes induced by streptozotocin (Item No. 13104). Formulations containing macitentan have been used for the treatment of pulmonary arterial hypertension.{36211}
Territorial Availability: Available through Bertin Technologies only in France
| Size | 100 mg, 25 mg, 250 mg, 50 mg |
|---|---|
| Shipping | dry ice |
| CAS number | 441798-33-0 |
| Molecular formula | C19H20Br2N6O4S |
| Smiles | BrC1=CC=C(C2=C(OCCOC3=NC=C(Br)C=N3)N=CN=C2NS(NCCC)(=O)=O)C=C1 |
| Molecular weight | 588,3 |
| Custom code | 2933.59 |
| Formulation | A crystalline solid |
| Purity | ≥98% |
| UNSPSC code | 12352100 |
Cayman Chemical’s mission is to help make research possible by supplying scientists worldwide with the basic research tools necessary for advancing human and animal health. Our utmost commitment to healthcare researchers is to offer the highest quality products with an affordable pricing policy.
Our scientists are experts in the synthesis, purification, and characterization of biochemicals ranging from small drug-like heterocycles to complex biolipids, fatty acids, and many others. We are also highly skilled in all aspects of assay and antibody development, protein expression, crystallization, and structure determination.
Over the past thirty years, Cayman developed a deep knowledge base in lipid biochemistry, including research involving the arachidonic acid cascade, inositol phosphates, and cannabinoids. This knowledge enabled the production of reagents of exceptional quality for cancer, oxidative injury, epigenetics, neuroscience, inflammation, metabolism, and many additional lines of research.
Our organic and analytical chemists specialize in the rapid development of manufacturing processes and analytical methods to carry out clinical and commercial GMP-API production. Pre-clinical drug discovery efforts are currently underway in the areas of bone restoration and repair, muscular dystrophy, oncology, and inflammation. A separate group of Ph.D.-level scientists are dedicated to offering Hit-to-Lead Discovery and Profiling Services for epigenetic targets. Our knowledgeable chemists can be contracted to perform complete sample analysis for analytes measured by the majority of our assays. We also offer a wide range of analytical services using LC-MS/MS, HPLC, GC, and many other techniques.
Accreditations
ISO/IEC 17025:2005
ISO Guide 34:2009
Cayman is a leader in the field of emerging drugs of abuse, providing high-purity Schedule I-V Controlled Substances to federally-licensed laboratories and qualified academic research institutions for forensic analyses. We are certified by ACLASS Accreditation Services with dual accreditation to ISO/IEC 17025:2005 and ISO Guide 34:2009.
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