Briserin

Formula : C33-H40-N2-O9.C35-H41-N5-O5.C14-H20-Cl-N3-O3-S.C-H4-O3-S
CAS : 55128-93-3 

Contains dihydroergotoxine; reserpine; clopamide.

Brivanib alaninate

Formula : C22-H24-F-N5-O4
CAS : 649735-63-7 

NCI: The alaninate salt of a vascular endothelial growth factor receptor 2 (VEGFR2) inhibitor with potential antineoplastic activity. Brivanib strongly binds to and inhibits VEGFR2, a tyrosine kinase receptor expressed almost exclusively on vascular endothelial cells; inhibition of VEGFR2 may result in inhibition of tumor angiogenesis, inhibition of tumor cell growth, and tumor regression. (NCI Thesaurus)

Brivudine

Formula : C11-H13-Br-N2-O5
CAS : 69304-47-8 

Anti-herpes agent; (Z)-isomer much less active against herpes simplex virus type 1 & somewhat less active against herpes simplex virus type 2 than is the (E)-isomer; both isomers show similar activity against vaccinia virus.