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Active Pharmaceutical Intermediate

We are a leading Wholesaler of osimertinib active pharmaceutical ingredient from Mumbai, India.

Osimertinib Active Pharmaceutical Ingredient

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Osimertinib Active Pharmaceutical Ingredient
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Osimertinib (Active Pharmaceutical Ingredient) sold under the brand name Tagrisso, is a medication used to treat non-small-cell lung carcinomas with specific mutations. It is a third-generation epidermal growth factor receptor tyrosine kinase inhibitor. The most common side effects include diarrhea, rash, musculoskeletal pain, dry skin, skin inflammation around nails, sore mouth, fatigue and cough. Medical uses Osimertinib is used to treat locally advanced or metastatic non-small-cell lung cancer (NSCLC), if the cancer cells are positive for the T790M mutation in the gene coding for EGFR or for activating EGFR mutations. The T790M mutation may be de novo or acquired following first-line treatment with other tyrosine kinase inhibitors (TKIs), such as gefitinib and afatinib. In the US, EGFR exon 19 deletions, exon 21 L858R mutations or the T790M status of the patient prior to treatment with osimertinib must be detected by a federally approved companion diagnostic test. The Food and Drug Administration (FDA) has approved FoundationOne CDx as one available companion diagnostic test for this purpose. In Europe and elsewhere, activating EGFR mutations or T790M mutations may be determined by a validated test. In people treated with osimertinib, resistance usually develops within approximately 10 months. Resistance mediated by an exon 20 C797S mutation accounts for the majority of resistance cases. It can cause fetal harm, so should not be used in women who are pregnant, and women who take it should avoid becoming pregnant. Caution should be taken in people with a history of interstitial lung disease (ILD), as they were excluded from clinical trials, since the drug can cause severe ILD or pneumonitis. Caution should also be taken in people with a predisposition to long QT syndrome as the drug can provoke this. Adverse effects Very common (greater than 10% of clinical trial subjects) adverse effects include diarrhea, stomatitis, rashes, dry or itchy skin, infections where finger or toenails abut skin, low platelet counts, low leukocyte counts, and low neutrophil counts. Common (between 1% and 10% of clinical trial subjects) adverse effects include interstitial lung disease.[14] Interactions Osimertinib is metabolized by CYP3A4 and CYP3A5, so substances that strongly inhibit either enzyme, like macrolide antibiotics, antifungals, and antivirals may increase exposure to osimertinib, and substances like rifampicin that activate either enzyme may decrease the effectiveness of osimertinib.[1][14] Pharmacology Osimertinib binds irreversibly to epidermal growth factor receptor proteins expressed by EGFR with a T790M mutation;[14] it also binds irreversibly to EGFR with a L858R mutation and with an exon 19 deletion.[1] It exhibits linear pharmacokinetics; the median time to Cmax is 6 hours (range 3–24 hours). The estimated mean half-life is 48 hours, and oral clearance (CL/F) is 14.3 (L/h).[1] 68% of elimination is by feces and 14% by urine.[1] Chemistry Osimertinib is provided as the mesylate; the chemical formula is C28H33N7O2·CH4O3S, and the molecular weight is 596 g/mol. The chemical name is N-(2-{2-dimethylaminoethyl-methylamino}-4-methoxy-5-{[4-(1-methylindol-3-yl)pyrimidin-2-yl]amino}phenyl)prop-2-enamide mesylate salt. History The drug discovery program that led to osimertinib started in 2009 and yielded the drug by 2012; the process was structure-driven and aimed to find a third generation EGFR inhibitor that would selectively target the T790M form of the EGFR receptor. Osimertinib was designated as a Breakthrough Therapy in April 2014, based on Phase I trial results, and the drug was provisionally approved under the FDA accelerated approval program with a priority review voucher, in November 2015. In February 2016, the EMA provisionally approved osimertinib under an accelerated process—the first approval under the program.
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