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CAS NO.63968-64-9
cas 388082-78-8 99 Lapatinib ditosylate powder
Product Name: Lapatinib ditosylate
CAS: 388082-78-8
MF: C41H40ClFN4O11S3
MW: 925.46
EINECS: 642-915-3
cas 388082-78-8 99 Lapatinib ditosylate powder
Product Name: Lapatinib ditosylate
CAS: 388082-78-8
MF: C41H40ClFN4O11S3
MW: 925.46
EINECS: 642-915-3
Lapatinib is available is used in combination with cabecitabine in thetreatment of breast cancer for those patients that over expressthe type 2 EGF-R and who have previously receivedtaxane, anthracycline, and trastuzumab therapy. The type 2EGF-R is one subtype of this receptor and is also known asHER2 or ErbB-2.
The drug isboth a substrate and an inhibitor of the efflux transportersPgp and BCRP. It is also an inhibitor of the hepatic uptaketransporter OATP1B1, which is an organic anion transporter.The absorption of lapatinib is incomplete andvariable after oral administration. The agent is extensivelymetabolized by CYP3A4 and CYP3A5, with minor contributionsfrom CYP2C19 and CYP2C8. Lapatinib inhibitsCYP3A and CYP2C8 at clinically relevant concentrations.