Try this,, price is comparatively higher,, u can get what exactly u are looking for.

http://www.sigmaaldrich.com/catalog/search?term=Bosutinib&interface=All&N=0&mode=match%20partialmax&lang=en®ion=IN&focus=product

I send you 2 articles and a picture of the Bosutinib. Your question with the " Bosutinib Isomer" is a little obscure. Please define  the isomer of this drug and use the patent name SKI-606  in your question and not the commercial name.

Have you contacted the Wyeth Cy?

JRG

Thanks, Jean!

I contacted them and they advise me to send them mail, not e-mail.